Avoiding travel through the United States

The US, like most other countries, has very strict security arrangements at borders; any traveller can be detained, searched and questioned, and some have been arrested or deported. Like most security measures anywhere, these are not at all transparent; it is almost impossible to discover why officials take particular actions.

Checked baggage may be opened and searched. There are TSA-approved locks which the inspectors from several countries can easily open. If you are not using one of those and they want to search, then they will break in and accept no responsibility for damage.

SSSS stands for Secondary Security Screening Selection; if this, or "*S*" is printed on your boarding card, it means that you have been selected for more screening/questioning than other travelers. There seem to be all kinds of reasons that can get you an SSSS mark from prior travel to "suspicious" countries (and of course being a citizen of such a country) to having paid cash for your tickets. After the inspection your boarding card will be stamped to indicate that you have been screened; if you show up at the gate with an SSSS boarding pass without a stamp, you may be sent back to the security checkpoint.

Critics say the US system fails to guarantee basic standards of fairness, human rights and civil rights, with racial profiling used against various groups thought likely to include either terrorists or illegal immigrants. In one case, back in 2002, a Canadian citizen en route to Canada, Maher Arar, was grabbed while changing planes and deported to Syria (his country of birth) where he says he was tortured. Even American citizens who are critics of their government's policies have been targeted for searches that are arguably unconstitutional. These incidents are quite rare, but perhaps not rare enough to be reassuring. With the return of Donald Trump to the White House in 2025, reports of harassment at the border have once again increased with some incidents alleged to have been politically motivated. A few high-profile cases even involved dissidents in exile being threatened with being deported to the country where they had criticized an authoritarian regime.

The stamps in your passport can also be a problem. In 2017 a former Prime Minister of Norway, travelling on a diplomatic passport, was held and questioned for an hour or so because he had visited Iran several years earlier.

Another issue is privacy of digital data and internet identities. Already the visa application form demands disclosure of digital identities. The authorities may demand that you give them passwords for your phone or laptop, or at least open the devices to them; they may also want the keys for any encrypted data, and in some cases they may also demand your social media passwords. Arguably all these are unconstitutional violations of privacy but the government position is that they are both lawful and necessary. There are a number of court cases challenging these intrusions, but as of early 2018 no clear resolution is in sight.

The traveller has a no-win dilemma here. If you are subject to a device search, you are already suspected of wrong-doing. If you let them in, they can use any information drawn from your devices to deny your entry and ban you from the United States. Additionally, they can read or copy all sorts of personal data, for example taking your contacts list for use in surveillance. If you decline a device search, they can certainly seize the devices and send them to a digital forensics lab, detain you a while, subject you to questioning, deny you entry and ban you from the United States. Of course they can also do any of those even if you comply; one Canadian was denied entry because they suspected he might be a gay prostitute after he let them into his laptop and they discovered he had an account on a dating site that they (rightly) considered dubious.

The only effective mitigation for a device search is to minimize the amount of information they carry to the greatest extent possible. Many travellers find it advisable to leave some devices at home; set up an old laptop without any important private data and take it on your trip, or buy a "burner" phone to use while travelling. Of course the US is by no means the only place where this might be worthwhile, and probably not even the worst threat; for example these are routine precautions for people bound for China.

For more detail on your rights and on defenses, the EFF (Electronic Frontier Foundation, a digital civil rights advocacy group) have a guide to Digital Privacy at the U.S. Border.

The US has a no fly list; if your name is on that, you cannot board a flight that will pass through US airspace, even if the flight does not land in the US (e.g. flights from Mexico to Canada). Criteria to get onto that list are infamously opaque and the only reasons ever cited are "security" and despite many arguing that there should be, there is little to no legal recourse to get off the list once on it. In the case of mistaken identity (i.e. if somebody on the list has the same name as you), you can apply to the DHS Traveler Redress Inquiry Program, and if successful, you will be assigned a redress number that you can provide your airline with so they know that you are not the person on the list. Unfortunately, there are multiple lists maintained by various entities in multiple countries and bad information tends to propagate, so even if you manage to get off one list, the wrong information is likely to persist on others.

Since 2025, South Sudan passport holders are banned altogether from travelling to the United States, owing to U.S. sanctions. Nationals of certain other countries (see map above) are unable to get visas of any kind, whilst others cannot get "B" (travel) visas.

In Canada marijuana became legal, including for recreational use, in 2018. US officials have said Canadians may be banned for life from entering the US for legally smoking it, or for working for or investing in the legal companies involved. Marijuana being legal on the state level in several states of the US - including states that border Canada - has no bearing on this, as immigration (and being turned back at the border) is a federal matter and federal law continues to deem cannabis illegal.

Although this article covers planning a travel itinerary that avoids landing in the United States, there is an additional concern regarding passing through United States airspace during a flight between two other countries.

For example, a flight between the United Kingdom and Mexico may well enter the airspace of the United States. Nearly all flights from Canada and East Asia to Latin America pass over the US, as do many flights from Canada to East Asia and some to Europe. Also, airlines avoiding Russian airspace flying between East Asia and Europe may go via the Western Hemisphere, particularly when departing from Japan to destinations in Europe and such flights will overfly Alaska. Even domestic Canadian flights may do so since the geographically-shortest paths from Montréal to Halifax or Toronto to Winnipeg cross US territory.

All flights travelling through the airspace of the United States are required to provide passenger details to US authorities, even if there is no intention to land in the US. If your name is on a no-fly or other watch list, then your airline may deny you permission to board your flight. A worst-case scenario would be your plane being forced to land in the United States with you being placed under arrest.

There can be difficulties for US citizens as well. Citizens are required to enter the country on a U.S. passport; a dual citizen may get in significant legal trouble for trying to enter on another passport. Also, unlike virtually every other country in the world, the U.S. imposes full tax liability on its citizens and on resident aliens, regardless of where they live or where they earn their income, so you may find yourself in serious legal trouble for not filing U.S. tax returns, even if you had no income during your time abroad.

If you were born in the United States, you will be considered a U.S. citizen unless your parents were on a diplomatic posting at the time or you have formally renounced citizenship. This is true even if your parents were undocumented immigrants or just on a trip to the U.S. at the time of your birth. People who have renounced their U.S. citizenship before proper U.S. authorities (a U.S. embassy or consulate in their home country) should carry copies of the paperwork they received upon renunciation.

Former citizens may potentially be discriminated against when trying to reenter. Although in theory you should have no issue in re-entering the country as a new foreign citizen (provided you meet the relevant entry requirements), passports showing the US as your birthplace will raise suspicions and the immigration officer can reject your entry if they are not satisfied with the genuineness of your travel. Moreover, if immigration officials believe you renounced your citizenship for the purpose of avoiding taxes, you can legally be denied entry, although this is extremely rare in practice.

Getting from Europe to Canada in practice never requires entering the U.S. and most flights don't even enter U.S. airspace. European airports big enough to have intercontinental flights often serve at least Toronto Pearson. From the largest European hubs there are often several daily flights to Canada's major intercontinental airports in Toronto, Montreal and Vancouver and sometimes direct flights to other Canadian airports too (Calgary in particular has several connections through Air Transat, and soon WestJet as well).

Mexico City Benito Juarez Airport can be reached on nonstop flights from most of the busiest airports in Europe, both by Aeromexico and European carriers. Mexican beach destinations, Cancún in particular, are also served by nonstop flights from Europe.

Iberia flies from Madrid Barajas to several Central American airports; Guatemala City, Panama City, San José. Panama Tocumen and San José have a surprisingly good coverage from major European airports; both also have flights from Amsterdam Schiphol, Frankfurt Airport and Paris CDG. Panama is additionally served from Istanbul Airport, San José from London, Munich Airport and Zurich Airport. From there regional carriers will take you to other parts of Central or northern South America. Note that KLM and Iberia codeshare with regional airlines from other airline alliances on some of these routes and booking them on a single ticket is much cheaper than flying to SJO/PTY and booking onward travel to - say - Managua separately.

Cuba and the Dominican Republic are likely the most popular destinations in the Caribbean and there are a number of direct flights from Europe – especially to beach destinations like Varadero, Puerto Plata and Punta Cana – but also to the capitals Havana and Santo Domingo. In addition, Montego Bay in Jamaica is served from several European airports.

Most other islands in the Caribbean were — or are still — ruled by either the British, Dutch or French. Therefore, if the island's airport is big enough for transatlantic flights there are most likely direct (both charter and scheduled) services from the former/current colonial capital; depending on the island Amsterdam Schiphol, London Heathrow, London Gatwick, Paris Charles de Gaulle Airport or Paris Orly Airport and in some cases other European airports too. From there, you can get to the smaller islands by regional flights.

If you want to go on a Caribbean cruise, it's quite hard to find a suitable one if you need to avoid a transit through the US. Largely catering to American tourists, most of them start and end in a US port, often in Florida or Puerto Rico. There are some European-based cruise companies that start their cruises elsewhere in the Caribbean but do check the cruise itinerary carefully before booking it – there are other US territories in the Caribbean too.

In general, nonstop flights between Europe and South America go nowhere near the United States – exceptions are flights to Colombia and Ecuador that might fly over U.S. territories in the Caribbean. Again, the largest European airports all have services to the largest South American airports Sao Paulo, Rio de Janeiro, Buenos Aires and Santiago. From these four hubs there is a good access to all of the rest of the continent. Caracas used to be served from most of the above European airports as well, but in the late 2010s the unrest in the country as well as problems in getting bills owed by Venezuelan entities paid in hard currency has prompted several airlines to suspend their services there meaning that it can be quite difficult as of 2019 to get there.

In addition, capitals of Spanish-speaking countries are in general served by direct flights at least from Madrid but occasionally also other major European airports (for instance, Lima, Quito and Guayaquil are connected to Amsterdam by KLM). Most of the largest cities in Brazil, in turn are served by direct flights from Lisbon and Paramaribo and Cayenne are reachable from Amsterdam Schiphol and Paris Orly, respectively.

There are some non-stop services to Vancouver. Air Canada flies from Sydney to Vancouver non-stop, with an onward direct flight on the same plane to Toronto. In addition, Qantas has seasonal flights on the same route. From New Zealand, Air New Zealand has non-stop flights from Auckland to Vancouver.

You can also continue to book flights to Canada via either Auckland or major Asian transit points such as Tokyo, Singapore, Bangkok and Hong Kong. Check in each case that the flight is non-stop or via Vancouver as a first stop.

From most of elsewhere in Oceania, the only flights to the Americas go to either Honolulu or Los Angeles, and you have to backtrack to New Zealand, Australia or Asia to get to Canada.

Santiago is served directly from Sydney and Melbourne by Qantas, and Sydney via Auckland by LATAM. The latter also operates a service from Melbourne. Buenos Aires can be reached by Air New Zealand direct flights from Auckland. These flights are substantially shorter than trips via North America, but are less frequent and can be more expensive. Book well in advance. Onward flights to the rest of South America and up to Mexico are available from both cities.

Getting to the Caribbean or Central America from Oceania entails quite a few flights; you can either fly via Canada or via Santiago or Buenos Aires with at least one additional transfer at some airport in northern South America. Going to some places in the Caribbean that are part of the Commonwealth might be possible with only one change of planes in London but expect the journey to take closer to two days.

Finally, for going to South America, there's one rather exotic and probably expensive alternative, perhaps something to be considered for a round the world adventure: Papeete in French Polynesia has flights from some other cities in Oceania as well as from Tokyo. From there, LATAM flies via Easter Island to Santiago.

Most flights from Australia and New Zealand heading to Europe connect in Dubai, Abu Dhabi, Doha, or Singapore. Other popular options include Hong Kong, Bangkok and Kuala Lumpur.

There are many non-stop flights to Vancouver from the major East Asian hubs on both Asian and Canadian airlines, as Vancouver is the closest North American major airport to Asia. Flights between Hong Kong and Vancouver are particularly frequent due to the large Hong Kong diaspora in Vancouver. Options from Southeast Asia are more limited, but Philippine Airlines operates a nonstop flight from Manila, while Air Canada flies seasonally from Bangkok, and year-round from Singapore, the latter being Air Canada's longest flight by distance.

There are many non-stop flights from Hong Kong, Beijing, Tokyo, Manila, Taipei, Guangzhou and Shanghai to Toronto, owing to the business links and large expatriate Asian population in the city of Toronto. There are also nonstop flights from Beijing to Calgary and Montreal on Hainan Airlines and Air China respectively (with an onward flight from Montreal to Havana, Cuba), and nonstop flights from Shanghai and Tokyo to Montreal on Air Canada.

Several Middle Eastern carriers fly to Toronto. Moreover Air Canada has some Middle Eastern airports in their route network. Royal Jordanian and Qatar Airways fly to Montreal from Amman and Doha respectively, and Turkish serves Vancouver, Toronto and Montreal from Istanbul.

There are also flights to Toronto from South Asia. Air Canada connects Delhi to Toronto, and PIA has flights from several Pakistani destinations.

Being located roughly on the other side of the planet, there are very few direct connections between Latin America and the Far East and you're in for a lengthy trip no matter which way you travel. While direct services do exist, due to the long distances there are hardly any non-stop flights. The plane has to stop and refuel somewhere, and for some routes, that somewhere is an airport in the United States. Increasingly fuel efficient planes with bigger and bigger tanks bring longer and longer routes into the realm of possibility, so direct routes deemed impossible a few years ago may be tantalizingly close to reality.

One-stop connections from Asia to South and Central America and the Caribbean are possible by transiting via major European hubs. Passengers heading to South America may also consider transiting via Oceania (as described above) or southern Africa (as described below).

Benito Juarez Airport in Mexico City is the Latin American airport with the largest number of connections from the Far East; Aeromexico flies there from Tokyo, Seoul and Shanghai (stop in Tijuana). Additionally, ANA flies there from Tokyo, Hainan Airlines from Beijing (stop in Tijuana) and China Southern from Guangzhou (stop in Vancouver, Canada). From there you can fly on to elsewhere in Latin America and the Caribbean. Finally, Air China flies from Beijing to Havana with a stop in Montreal, and to Sao Paulo with a stop in Madrid.

From the Middle East, the situation is the opposite; you can get directly to South America, but will need to transfer to get to Mexico, Central America or the Caribbean. Emirates (from Dubai), Qatar (from Doha) and Turkish (from Istanbul) all have services to Sao Paulo and Buenos Aires. Emirates also flies to Rio de Janeiro and Santiago.