Last March, I booked a round-trip to Lisbon for $312 out of JFK. My coworker booked the same trip two weeks later — same airline, same route — for $589. The difference? She didn't have a pounce alert set. I did.
That's the game. And in 2026, the game has some very interesting players.
Transatlantic capacity is up. Southeast Asia routes are recovering. A handful of budget carriers have quietly opened new US gateways that most travelers haven't noticed yet. The result: there are more genuinely cheap international routes from the US right now than at any point in the last four years.
Here's where the real catches are — ranked not by vibes, but by actual fare data.
How we defined "cheap"
For this guide, "cheap" means round-trip economy fares from major US departure cities (JFK, LAX, ORD, MIA, BOS) that regularly drop below $600 — and frequently below $400 when you're hunting at the right time. We're not talking about one-off mistake fares. We're talking about routes where low prices are structurally repeatable.
One caveat: prices move. What costs $389 today might cost $520 in six weeks. That's why setting a FlightKitten hunt on these routes matters — you want to catch the dip, not chase it after it's gone.
Portugal: still the best value in Western Europe
Portugal keeps showing up at the top of these lists because it keeps earning its place. TAP Air Portugal runs JFK-LIS (Lisbon) with regularity, and their economy fares — especially in shoulder season — are legitimately competitive. We've tracked round-trips as low as $298 in January and $340-$380 in April and October.
The secret weapon here is TAP's hub structure. Because Lisbon is their connecting point for onward flights to Brazil and Africa, they need to fill those transatlantic seats. That pressure keeps base fares lower than you'd expect from a legacy carrier. United and Iberia also fly JFK-LIS, but TAP is almost always the price leader on this route by $40-$80.
From the West Coast, LAX-LIS on TAP (with a connection) runs $420-$520 in off-peak windows — not as dramatic, but still solid for a European round-trip.
| Route | Airline | Low-season low | Shoulder season avg |
|---|---|---|---|
| JFK-LIS | TAP Air Portugal | $298 | $360 |
| BOS-LIS | TAP Air Portugal | $310 | $375 |
| LAX-LIS | TAP (via LIS) | $420 | $490 |
Mexico: the obvious answer that people keep underestimating
Everyone knows Mexico is cheap to fly to. What people miss is how cheap, and from how many US cities.
Aeromexicoo, Volaris, and VivaAerobus have turned the US-Mexico corridor into one of the most competitive short-haul international markets on the planet. You can fly DAL-MEX (Dallas to Mexico City) on Volaris for under $120 round-trip if you're flexible. MIA-CUN (Miami to Cancun) regularly drops below $150 on Spirit or Frontier.
But here's the thing people miss: Mexico isn't just beach towns. Oaxaca City (OAX), Guadalajara (GDL), and Mérida (MID) are all accessible via connecting fares that often come in under $250 round-trip from the Southeast and Southwest US. I once tried to book a direct flight from Atlanta to Oaxaca, realized it didn't exist, booked ATL-MEX-OAX for $198 total, and felt unreasonably smug about it.
Pro Tip: Volaris and VivaAerobus are ultra-low-cost carriers with Spirit-style fee structures. Price in your carry-on bag before you celebrate that $89 base fare — the all-in number is what matters.
Colombia: South America's best-kept flight deal
Bogotá (BOG) and Medellín (MDE) have become genuinely accessible from the US in 2026, and the fares reflect a market that hasn't fully caught on yet.
Avianca runs JFK-BOG and MIA-BOG regularly, with round-trips frequently sitting in the $280-$380 range. Spirit flies MIA-BOG and MIA-MDE — and while Spirit is Spirit, their Colombia fares all-in often beat Avianca's sale prices. American Airlines covers this corridor too, though they're rarely the cheapest option.
The structural reason Colombia stays cheap: Bogotá is Avianca's hub, so they're competing hard on US routes to drive volume. Add Spirit's presence and you get genuine price competition on a route where the destination itself is still underpriced relative to comparable cities.
From Houston (IAH), LATAM and United both serve BOG — and IAH-BOG frequently comes in under $320 round-trip in January through March.
| Route | Airline | Best tracked price (2025-2026) |
|---|---|---|
| MIA-BOG | Avianca | $267 |
| JFK-BOG | Avianca | $312 |
| IAH-BOG | United | $298 |
| MIA-MDE | Spirit | $241 |
Vietnam: the long-haul deal that requires patience
Vietnam is not a cheap flight in absolute terms. But on a cost-per-mile basis, and given how long you can stretch a trip budget once you land, it belongs on this list.
The route math: Korean Air and Asiana both fly US-ICN (Seoul Incheon) with onward connections to HAN (Hanoi) or SGN (Ho Chi Minh City). When these itineraries are booked as a single ticket, round-trips from LAX to SGN can fall to $580-$720 in off-peak windows. From the East Coast, expect $650-$850.
Cathay Pacific via HKG is the other reliable option — and their economy product is genuinely good, which matters on a 16+ hour journey. I've seen LAX-SGN on Cathay drop to $598 in February, which for a transpacific ticket is basically shoplifting.
The patience part: these fares don't stay available long. A FlightKitten hunt on LAX-SGN or JFK-HAN set to alert below $700 will catch the windows without requiring you to check Google Flights every morning like a person with no hobbies.
Greece: the summer trap and how to avoid it
Everyone wants to go to Greece in July. Airlines know this. Fares to ATH (Athens) in peak summer are a punishment.
But fly in May or October? Different story entirely.
Lufthansa, Aegean Airlines, and United all serve JFK-ATH. In May, round-trips regularly sit at $420-$520. Aegean in particular runs some aggressive sales in April and September — they're trying to extend their season and will price accordingly. We've tracked JFK-ATH on Aegean (via a European connection) at $389 in late April.
The move: set your hunt for ATH departures in May or October, alert threshold around $450 from the East Coast. Then go when the alert fires, not when Instagram tells you to.
Japan: pricier than it was, still worth hunting
I'll be honest — Japan fares have crept up since the post-pandemic rush. The $400 LAX-TYO round-trips of 2023 are mostly gone. But "gone" doesn't mean "unachievable."
ANA and Japan Airlines both run LAX-NRT (Narita) and LAX-HND (Haneda) with consistent frequency. In January and February — the quietest window for Japan tourism — round-trips still drop to $550-$680 from LAX. From JFK, add $80-$120 to those numbers.
United's LAX-NRT and SFO-NRT routes compete directly with the Japanese carriers, which keeps prices honest. Delta covers SFO-HND and SEA-NRT.
The trick everyone forgets: positioning flights. If you're in the Midwest or Southeast, flying to LAX or SFO on a cheap domestic fare and then catching the transpacific leg can save $200-$300 over booking a direct connection from your home airport. It's more work, but it's real money.
Pro Tip: January is Japan's cheapest month to visit AND cheapest to fly to. The crowds are thin, the ryokans are bookable, and the cherry blossoms aren't there yet — which you'll survive.
Morocco: the underrated transatlantic option
Casablanca (CMN) and Marrakech (RAK) don't get enough attention in budget travel conversations, and I think it's because people underestimate how competitive Royal Air Maroc has gotten.
Royal Air Maroc flies JFK-CMN directly — and in 2025 and into 2026, they've been pricing aggressively to build US market share. Round-trips have come in as low as $340 from JFK, with $420-$500 being a reliable window for most of the year outside summer.
Iberia also connects well through MAD (Madrid) to CMN and RAK, and their JFK-MAD-RAK itineraries sometimes undercut Royal Air Maroc on total price, especially during Iberia's periodic transatlantic sales.
Morocco also solves a specific traveler problem: if you want somewhere genuinely different from a European city break but don't want a 14-hour flight, CMN is about 7 hours from the East Coast. That's a sweet spot.
The routes that surprised us in 2026
A few catches from FlightKitten's data this year that didn't fit neatly into a country-by-country breakdown:
- JFK-KEF (Iceland) on Icelandair or PLAY has been under $280 round-trip multiple times this year. Iceland is not a cheap destination once you land, but the flight is absurdly affordable.
- MIA-GRU (São Paulo) on LATAM has dropped below $400 during their sales windows — which happen more often than most people realize.
- LAX-MEX (Mexico City) on Aeromexico has hit $178 round-trip in January. That's not a typo.
- ORD-DUB (Dublin) on Aer Lingus regularly undercuts United and American on the Chicago-Ireland corridor, with fares around $380-$450 in spring.
What to actually do with this information
Reading a list of cheap destinations is satisfying for about four minutes. Then you close the tab and nothing happens.
Here's the actual workflow:
- Pick two or three destinations from this list that genuinely interest you — don't just pick the cheapest, pick the ones you'd actually book.
- Set hunts on FlightKitten for those routes from your nearest major airport. Set your alert threshold at the low end of the ranges in this guide.
- Block two or three flexible travel windows in your calendar — even rough ones. "Sometime in April" is enough.
- When the alert fires, you have 24-48 hours before the fare moves. Book it or don't, but don't sit on it for a week.
The travelers who get the best fares aren't the ones who search the hardest. They're the ones who set up their hunts and then get on with their lives until the catch lands in their inbox.
The bottom line
In 2026, the best-value international flights from the US cluster around a few consistent themes: TAP and Royal Air Maroc pricing aggressively to build US market share, Latin American carriers competing hard on their home turf, and transpacific routes rewarding travelers who fly in January and February instead of June.
Portugal, Colombia, and Mexico are the most reliably cheap. Vietnam and Japan reward patience. Greece and Morocco are underrated by people who aren't paying attention.
Set your hunts, stay flexible on dates, and stop booking flights at full price because you waited until two weeks before departure. The deals are out there — they just don't wait for you.
Start hunting cheap international fares on FlightKitten and set your first pounce alert today. The catch won't come to you.
