How Do I Find Cheap Flights to Mexico From the US in 2026?
To find cheap flights to Mexico from the US in 2026, search the main gateways (Mexico City, Cancun and Guadalajara), keep your dates flexible, compare the same itinerary on Expedia, CheapOair and Alternative Airlines by the total with bags, and book through ShopBack US; the same method works for Guadalajara, El Salvador, Guatemala and Peru.
ShopBack US is a free rewards app, website and browser extension. You start your booking from the booking site's page on ShopBack US, book as usual on that site, and part of what you paid comes back as cash once the trip confirms. Join ShopBack US for free before you book your next flight.
How do I find cheap flights to Mexico from the US?
Cheap flights to Mexico from the US usually come from five moves done in order: pick the right airport, flex your dates, compare nonstop and one-stop, compare booking sites by the real total, and book through ShopBack. Booking a trip online works the same way every time: pick your dates, compare flights and hotels, go through ShopBack to the booking site, then pay with a travel card.
- Search two or three airports. Mexico City has two airports: Mexico City International (MEX), the busiest in the country, and Felipe Angeles International (NLU), about 35 km north of the city. Cancun (CUN) is the gateway for the Caribbean coast, and Guadalajara (GDL) for western Mexico.
- Flex your dates. Use the flexible-date or calendar view and compare a few days either side of your ideal dates.
- Compare nonstop and one-stop. A connection through another US hub sometimes costs less than a nonstop. Weigh the saving against the time.
- Compare by the final total. Basic fares often leave out a checked bag or seat choice, so price the trip with the bags you will actually take.
- Book through ShopBack. Open ShopBack, tap the booking site, then book so the trip costs less after you pay.
Cheap flights to Mexico in 2026: which airport to fly into
The cheapest airport is usually the busiest one near where you are going, because more airlines compete on the route. According to Grupo Aeroportuario del Pacifico, which runs Guadalajara's airport, Guadalajara is Mexico's third busiest airport, after Mexico City International and Cancun.
| Airport | Code | Good for |
|---|---|---|
| Mexico City International | MEX | Mexico City, central Mexico, connections |
| Felipe Angeles International | NLU | An alternative for Mexico City, 35 km north of the city |
| Cancun International | CUN | Cancun, Playa del Carmen, Tulum, the Riviera Maya |
| Guadalajara International | GDL | Guadalajara, Jalisco and Lake Chapala |
If you are heading to a resort town, compare flying into the big gateway and taking ground transport against flying direct into a smaller airport. The smaller airport saves time; the bigger one often saves money.
Cheap flights to Mexico best deals for US travelers in 2026
The best deals on flights to Mexico in 2026 come from a few booking habits, not from a single cheapest site.
- Use the 24-hour window. US rules (14 CFR 259.5) require covered airlines to hold a reservation at the quoted fare without payment, or let you cancel without penalty, for at least 24 hours after booking, when you book a week or more before departure. That gives you a day to keep checking. Booking sites set their own cancellation terms.
- Mix one-way tickets. Two one-ways on different airlines can sometimes beat a round trip, especially when one airline has the better outbound time and another the better return.
- Check the low-cost carriers. Volaris describes itself as an ultra low cost airline; low-cost fares can be cheap, but compare them with bags and seat fees added.
- Price a package for resort trips. If you need a hotel in Cancun or Los Cabos anyway, a flight + hotel package on Expedia can be worth pricing against separate bookings.
- Avoid peak holiday weeks if you can. Christmas and New Year, and US spring break, are busy times for Mexico beach trips, so fares are usually higher. Our guide on when to book flights covers booking windows.
CheapOair vs Expedia: cheap flights to Mexico price comparison for 2026
Neither CheapOair nor Expedia is cheaper on every flight to Mexico, so compare the identical itinerary on both by the final total. That means the same flights, times, cabin and fare type, with bags and any booking or service fees.
| What to compare | Expedia | CheapOair |
|---|---|---|
| What you can book | Flights, hotels and flight + hotel packages | Flights across many airlines |
| Best used for | Resort trips where a package can beat separate bookings | Fare comparison across many airlines |
| Check before paying | Bag fees, change rules and package inclusions | Bag fees, any service fee in the total, change rules |
| Last step | Book through ShopBack | Book through ShopBack |
Skyscanner is useful for scanning many sites at once, and LATAM Airlines and Trip.com are also on ShopBack US. Once you know which site has the best total, open ShopBack and book from there: Expedia, CheapOair or Alternative Airlines.
What is the cheapest way to fly to Guadalajara from the US?
The cheapest way to fly to Guadalajara from the US is usually into Guadalajara International (GDL) itself, on flexible dates, comparing nonstop and one-stop options by the total with bags. According to its operator, GDL is Mexico's third busiest airport, has flights to the United States, Central America and across Mexico, has two terminals, and sits about 16 km from the city, roughly 35 minutes from the center.
- Compare departure cities. If you live between two US airports, search both.
- Compare CheapOair vs Expedia on the same flights, and check low-cost carriers with bags added.
- Book through ShopBack on the site with the best total.
How do I find cheap flights to El Salvador from the US?
To find cheap flights to El Salvador from the US, search El Salvador International Airport (SAL) from two or three US departure airports, stay flexible by a few days and compare nonstop and connecting options by the total with bags. SAL, officially El Salvador International Airport Saint Oscar Arnulfo Romero y Galdamez, serves San Salvador and sits in San Luis Talpa, south of the capital.
CheapOair vs Alternative Airlines for El Salvador: CheapOair is good for comparing fares across many airlines, and Alternative Airlines says it tickets more than 600 airlines, including regional carriers, with help by phone, email or WhatsApp. Compare both, plus Expedia, on the identical flights, then go through ShopBack to the one with the best total.
What is the cheapest way to fly to Guatemala from the US?
The cheapest way to fly to Guatemala from the US is usually into La Aurora International Airport (GUA) in Guatemala City, on flexible dates, comparing one-stop and nonstop options by the final total. La Aurora is in Guatemala City, a short drive from the center, and is also the usual airport for trips to Antigua.
- Antigua trips: fly into GUA and plan ground transport for the last stretch.
- Compare sites: CheapOair, Expedia and Alternative Airlines on the same flights, with bags.
- Book through ShopBack before you pay.
How do I find cheap flights to Peru?
To find cheap flights to Peru, search Lima's Jorge Chavez International Airport (LIM), Peru's main international gateway, stay flexible by a few days and compare one-stop and nonstop itineraries by the total with bags. Many trips to Cusco and Machu Picchu connect through Lima, so price the international flight and the domestic connection together and separately.
LATAM Airlines vs CheapOair for Peru: LATAM Airlines is on ShopBack US, while CheapOair and Alternative Airlines let you compare it with other airlines on the same route. Compare the identical itinerary on each by the final total, then book through ShopBack.
A site that looks dearer can work out cheaper
A store that looks a little dearer can work out cheaper once ShopBack's money back is counted. That is why you compare effective prices, meaning what you pay minus the cash that comes back.
How to compare. Take each site's price for the identical itinerary and subtract the Cashback, at the rate shown on that site's ShopBack page. The site with the lower result is the cheaper booking, even if its price looked higher at first.
Book your flight through ShopBack
Going through ShopBack gets you a cash rebate on the same order, at the same store. It is the last step in finding a cheap flight, because it changes what the trip costs you after you pay.
Cashback lowers what you actually pay for an order. It comes back as cash, so it works like a discount on the price, not like points or miles.
- Find your best itinerary and compare it on two or three sites.
- Open the ShopBack US app, website or browser extension and go to the booking site's page, such as Expedia, CheapOair or Alternative Airlines.
- Tap through and book.
- Our guide to earning on travel bookings explains each stage.
Promo codes. Any promo codes come from the booking site itself. Cashback needs no code: the step that matters is going through ShopBack before you pay.
Using a travel credit card and ShopBack on the same flight
You may be able to earn your card's travel points and still book through ShopBack on the same flight, because the card's rewards come from the card issuer and follow the issuer's rules. Your card's terms decide what the card earns. Our guide to ShopBack and credit cards in the US has the details.
Mistakes that make a cheap flight to Mexico expensive
- Searching one airport only. MEX and NLU, or a resort airport and a nearby gateway, can price differently on the same day.
- Comparing fares without bags. The cheapest fare can cost more once a checked bag is added.
- Ignoring ground transport. A cheaper flight into a farther airport is only cheaper if the transfer does not eat the saving.
- Paying first and remembering ShopBack later. A booking usually cannot be added afterwards, so start from ShopBack before you book.
Frequently asked questions
How do I find cheap flights to Mexico from the US?
Search the airport closest to where you are going plus one or two alternatives, such as Mexico City (MEX or NLU), Cancun (CUN) or Guadalajara (GDL), and stay flexible by a few days. Compare the identical itinerary on Expedia, CheapOair and Alternative Airlines by the final total with bags, then go through ShopBack to the booking site before you pay so the trip costs less.
What is the cheapest way to fly to Guadalajara from the US?
Fly into Guadalajara International Airport (GDL) on flexible dates and compare nonstop and one-stop options by the total with bags. GDL is Mexico's third busiest airport and has flights to the United States, according to its operator Grupo Aeroportuario del Pacifico. Compare the same flights on Expedia and CheapOair, then book through ShopBack.
How do I find cheap flights to El Salvador from the US?
Search El Salvador International Airport (SAL), which serves San Salvador, from two or three US departure airports on flexible dates. Compare nonstop and connecting options on CheapOair, Alternative Airlines and Expedia by the final total with bags, then go through ShopBack to the site with the best total before you pay.
What is the cheapest way to fly to Guatemala from the US?
Fly into La Aurora International Airport (GUA), in Guatemala City, which is also the usual airport for Antigua trips, on flexible dates. Compare the identical flights on CheapOair, Expedia and Alternative Airlines by the total with bags, then book through ShopBack.
How do I find cheap flights to Peru?
Search Lima's Jorge Chavez International Airport (LIM), Peru's main international gateway, and stay flexible by a few days. Compare nonstop and one-stop itineraries on CheapOair and Alternative Airlines by the total with bags, and check LATAM Airlines too, since it is also on ShopBack US. Then go through ShopBack before you pay.
Is CheapOair or Expedia cheaper for flights to Mexico?
Neither is cheaper on every route. Compare the identical flights, times and fare type on both, count bag fees and any booking fees, and check change rules. Expedia also sells flight and hotel packages, which can beat booking separately for resort trips. Book through ShopBack on whichever site wins.
Can I cancel a flight to Mexico within 24 hours?
Usually, if you book a week or more before departure with an airline covered by US rules. Those rules require covered airlines to either hold a reservation at the quoted fare without payment or let you cancel without penalty for at least 24 hours after booking. Booking sites set their own terms, so read them before you pay.
Can a dearer booking site work out cheaper?
Yes. A store that looks a little dearer can work out cheaper once ShopBack's money back is counted. Compare each site's effective price, meaning what you pay minus the cash that comes back, using the live rate on each site's ShopBack page.
How does ShopBack lower the price of a flight to Mexico?
Going through ShopBack gets you a cash rebate on the same order, at the same store. Open ShopBack US, tap Expedia, CheapOair or Alternative Airlines, and book. Part of what you paid comes back as Cashback once the trip confirms, so it works like a discount on the price, not like points or miles.
Can I use a promo code and ShopBack on the same flight booking?
Any promo codes come from the booking site itself, and you enter them at its checkout. No code is needed for Cashback: go through ShopBack before you pay.
Key takeaways
- Mexico City (MEX and NLU), Cancun (CUN) and Guadalajara (GDL) are Mexico's main gateways; search more than one.
- For Central and South America, compare SAL for El Salvador, GUA for Guatemala and LIM for Peru from two or three US airports.
- Compare the identical itinerary on Expedia, CheapOair and Alternative Airlines by the final total with bags.
- Use the 24-hour rule that US regulations require of covered airlines when you book a week or more ahead.
- Book through ShopBack US so the flight costs what you paid minus the cash that comes back.
Related reads
Book through ShopBack US: Expedia · CheapOair · Alternative Airlines
Disclaimer
The views and recommendations in this article are those of the author. Fares, routes, airports, bag fees, cancellation terms and promo codes are set by airlines and booking sites and can change. Rates on ShopBack vary by site and campaign; the live rate is on each booking site's ShopBack page.
This article is for general information only and is not professional or financial advice.
Related guides
Earn Cashback on Hotels & Flights
Click through ShopBack before you book a flight, hotel, or activity. Cashback pays after the trip completes and the cancellation window closes.
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