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Cheap International Flights

Round-trip fares on 48 international routes from 8 US cities: the average fare, the cheapest month and day to fly, and what you need to enter each country. All fares include taxes and fees.

  • Fare experts on call
  • Total prices, taxes included
  • Independent US travel agency

International fares at a glance

Averages for round trips over the past 12 months, including taxes and fees.

  • $321cheapest route: Fort Lauderdale–Nassau, average round trip
  • Februarycheapest month on 20 of 48 routes
  • Tuesdaycheapest day to depart on 13 routes
  • 16 weekstypical best time to book before you fly

Cheap international flights from your city

Pick a city to see six of its busiest nonstop international routes, cheapest first.

International flights from New York

JFKNew York JFK4h 21mNonstopCUNCancun

Avg round trip$502*
  • Cheapest in May ($423)
  • Lowest seen: JetBlue $330
  • Cheapest to leave on Monday

JFKNew York JFK3h 58mNonstopSDQSanto Domingo

Avg round trip$545*
  • Cheapest in January ($430)
  • Lowest seen: American Airlines $383
  • Cheapest to leave on Sunday

JFKNew York JFK3h 49mNonstopSTISantiago

Avg round trip$559*
  • Cheapest in January ($418)
  • Lowest seen: American Airlines $430
  • Cheapest to leave on Thursday

JFKNew York JFK5h 43mNonstopMEXMexico City

Avg round trip$608*
  • Cheapest in September ($527)
  • Lowest seen: Viva $373
  • Cheapest to leave on Tuesday

JFKNew York JFK7h 08mNonstopLHRLondon

Avg round trip$734*
  • Cheapest in January ($524)
  • Lowest seen: TAP Air Portugal $635
  • Cheapest to leave on Tuesday

JFKNew York JFK7h 26mNonstopCDGParis

Avg round trip$754*
  • Cheapest in January ($541)
  • Lowest seen: Condor $582
  • Cheapest to leave on Sunday

*Average round-trip economy fare on the route over the past 12 months, all airlines, including all taxes and fees. "Lowest seen" is the lowest round trip found for that airline. These are not live quotes; your travel expert will price your exact dates.

Where you can fly for less, by region

The lowest average round trip in each region across 110 routes from these 8 cities, with the month that is cheapest most often and typical nonstop flight times.

  • Caribbean

    From$321round trip

    Fort Lauderdale to Nassau

    • Cheapest most often in January
    • 1h to 5h 1m nonstop

    Santo Domingo, Punta Cana, Montego Bay, Nassau, Aruba, Port of Spain

  • Mexico

    From$349round trip

    Los Angeles to Guadalajara

    • Cheapest most often in January
    • 2h 1m to 5h 59m nonstop

    Cancun, Los Cabos, Mexico City, Puerto Vallarta, Ixtapa-Zihuatanejo, Guadalajara

  • South America

    From$352round trip

    Fort Lauderdale to Bogota

    • Cheapest most often in February and April
    • 3h 32m to 8h 24m nonstop

    Bogota, Medellin, Lima, Santiago

  • Central America

    From$372round trip

    Miami to San Jose

    • Cheapest most often in February
    • 2h 53m to 5h 46m nonstop

    Guatemala City, San Jose, Liberia, San Salvador

  • Europe

    From$522round trip

    Boston to Reykjavik

    • Cheapest most often in January
    • 5h 15m to 10h 56m nonstop

    Paris, Amsterdam, London, Frankfurt, Dublin, Rome

  • Asia

    From$826round trip

    San Francisco to Seoul

    • Cheapest most often in February
    • 11h 17m to 15h 56m nonstop

    Tokyo, Taipei, Seoul

Average round-trip economy fares over the past 12 months, including taxes and fees. Regions with fewer than three routes in our data are not shown.

US international flying by the numbers

How many people fly between the US and other countries, and the busiest routes, countries and cities in 2025.

  • 258.7 millionpassengers on nonstop flights between the US and other countries in 2025, 6% more than in 2019
  • 709,000international passengers a day, on average
  • Julythe busiest month, with 25.7 million passengers
  • 51%of these passengers flew on US airlines; the rest on foreign airlines

The 10 busiest international routes from the US

RoutePassengers in 2025A day, on average
1. New York JFK – LondonUnited Kingdom3,140,3938,604
2. New York JFK – ParisFrance1,743,6734,777
3. Los Angeles – LondonUnited Kingdom1,418,5233,886
4. San Francisco – TaipeiTaiwan1,223,3043,352
5. Los Angeles – SeoulSouth Korea1,191,6433,265
6. Los Angeles – Tokyo HanedaJapan1,108,3013,036
7. Los Angeles – GuadalajaraMexico1,099,1913,011
8. Dallas–Fort Worth – CancunMexico1,085,2252,973
9. Boston – LondonUnited Kingdom1,083,7282,969
10. New York LaGuardia – TorontoCanada1,053,6012,887
Countries with the most passengers to and from the US
  1. Mexico40.5 million
  2. Canada28.8 million
  3. United Kingdom20.2 million
  4. Dominican Republic10.6 million
  5. Germany10.6 million
  6. Japan10.2 million
  7. France9.3 million
  8. South Korea6.8 million
  9. Italy5.8 million
  10. Netherlands5.8 million
Cities with the most passengers to and from the US
  1. London18.5 million
  2. Toronto11.6 million
  3. Cancun11.5 million
  4. Tokyo9.3 million
  5. Paris9.0 million
  6. Mexico City8.7 million
  7. Frankfurt6.9 million
  8. Seoul6.7 million
  9. Vancouver6.0 million
  10. Amsterdam5.8 million

Passengers on nonstop flights in 2025, US and foreign airlines, counting both directions. Routes are airport to airport; city totals include all of a city's airports.

When international flights are cheapest

February is the cheapest month on 20 of 48 routes, and Tuesday the cheapest day to leave on 13. The booking data points to about 16 weeks ahead.

Routes that are cheapest in each month
  1. 18Jan
  2. 20Feb
  3. 2Mar
  4. 4Apr
  5. 1May
  6. 0Jun
  7. 0Jul
  8. 1Aug
  9. 1Sep
  10. 0Oct
  11. 1Nov
  12. 0Dec
Routes where each day is the cheapest to depart
  1. 10Mon
  2. 13Tue
  3. 10Wed
  4. 4Thu
  5. 2Fri
  6. 1Sat
  7. 8Sun

What US citizens need to enter

Passport and travel permit rules for the countries on this page, for short tourist trips.

DestinationWhat you needBefore you fly
MexicoA passport book (a passport card is not accepted for flights). No visa for stays up to 180 days.Nothing to apply for. Keep the entry stamp or paper FMM you get on arrival until you leave.
CanadaA valid US passport. No visa or eTA for US citizens.Nothing to apply for.
Dominican RepublicA valid passport, a return ticket and a place to stay.Fill in the eTicket online for each arrival and departure.
JamaicaA passport valid when you arrive and leave. No visa for stays up to 90 days.Fill in the electronic C-5 immigration and customs card.
United KingdomA valid passport and an approved UK ETA.Get a UK ETA in the UK ETA app or on GOV.UK: £20, valid 2 years or until your passport expires.
Schengen EuropeFrance, Italy, Spain, Germany, Netherlands, Greece, Iceland and moreA passport valid at least 3 months after you leave. Up to 90 days in any 180 days, no visa.Nothing yet. Fingerprints and a photo are taken at the border on your first entry. ETIAS is not running yet; the EU will announce its start months ahead.
IrelandA valid passport. No visa for stays up to 90 days.Nothing to apply for.
JapanA valid passport and a return or onward ticket. No visa for stays up to 90 days.Nothing to apply for. Fingerprints and a photo are taken on arrival.
South KoreaA valid passport. No visa for stays up to 90 days.No K-ETA needed for arrivals through December 31, 2026.

Rules for US passport holders on short tourist trips, checked in October 2026. Rules change, so we check them again for your trip when you book.

Passports and coming home

  • 4 to 6 weeksroutine US passport processing, plus mailing time
  • 2 to 3 weeksexpedited processing, for an extra $60
  • $120Global Entry for 5 years, with faster US re-entry and TSA PreCheck
  • FreeMobile Passport Control app for re-entry at US airports that offer it

US airlines that fly abroad

See routes, hubs and typical fares for each airline.

Before you book an international flight

Six checks our fare experts make on every international booking.

  1. Your passport date

    Many countries want your passport valid for months after you leave. Check the date before you book.

  2. Entry permits

    The UK needs an ETA, and some Caribbean islands want an online form before you land. Apply early.

  3. Nearby airports

    New York, Miami, Chicago and Dallas each have more than one airport with international flights. One is often cheaper.

  4. The month you fly

    February is the cheapest month on more routes than any other. Moving your trip can save more than moving a day.

  5. Bags and seats

    The cheapest international fares can leave out a checked bag or seat choice. Compare the total.

  6. The total price

    Get the full price, including all taxes and fees, before you pay. We confirm it in writing.

Want the cheapest fare abroad?

A fare expert compares every airline on your route, including foreign airlines, then gives you the total price before you pay.

Call 1-800-000-0000 Search international fares

Cheap international flights: common questions

What is the cheapest international flight from the US?

Of the 48 routes on this page, Fort Lauderdale–Nassau has the lowest average round trip at $321, including taxes and fees. Mexico, the Caribbean and Central America are usually the cheapest regions to reach.

What is the cheapest month to fly abroad from the US?

February. It is the cheapest month on 20 of the 48 routes here. The route cards show the cheapest month for each route.

What is the cheapest day to leave on an international flight?

Tuesday is the cheapest day to depart on 13 of the 48 routes with day-of-week data. It changes by route, so check yours.

How far in advance should I book an international flight?

On the 46 routes with booking data, the advice is to book between 5 and 26 weeks before departure, 16 weeks in the middle.

What is the busiest international route from the US?

New York JFK to London, with 3,140,393 passengers in 2025, counting both directions. New York JFK to Paris is next with 1,743,673.

Which country do Americans fly to most?

Mexico. Flights between the US and Mexico carried 40.5 million passengers in 2025, counting both directions, more than any other country.

Which foreign city has the most flights to and from the US?

London. Its airports had 18.5 million passengers on flights to and from the US in 2025, ahead of Toronto (11.6 million) and Cancun (11.5 million).

Do I need anything besides a passport to fly to London?

Yes. US citizens need an approved UK ETA before they travel to the UK. It costs £20 in the UK ETA app or on GOV.UK and lasts 2 years or until your passport expires.

How long does it take to get a US passport?

Routine processing takes 4 to 6 weeks and expedited processing 2 to 3 weeks for an extra $60, not counting mailing time. Apply well before you book an international trip.

Is JustFlightsFares an airline?

No. JustFlightsFares is an independent US travel agency. Our fare experts compare airlines on your route and confirm the total price, including all taxes and fees, before you pay.

About this page. JustFlightsFares is an independent travel agency and is not affiliated with the airlines named here. Airline names appear only to identify them. Fares change constantly, and we confirm the total price, including all taxes and fees, before you pay.

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