Cheap Flights to Europe From USA: How to Fly Round-Trip for Under $500

Snagging cheap flights to Europe from USA routes isn’t about luck or a secret hack. It’s about knowing where the fares live, when they drop, and which airlines actually compete on price. In most years, a round-trip ticket from a major East Coast hub to cities like Dublin, Paris, or Lisbon can land between $350 and $550 if you book at the right moment, and even West Coast travelers can find sub-$600 fares to Western Europe a handful of times a year.

This guide breaks down the concrete numbers: what a good fare looks like by season, which airlines run the cheapest transatlantic routes, and how far in advance you should actually buy. No fluff, no “travel hacking” hype—just the patterns that repeat year after year.

If you want to know whether upgrading the seat makes sense once you find that ticket, our look at economy vs premium economy compares comfort against cost on long-haul routes.

What a Good Fare to Europe Actually Costs

The first thing to understand about cheap flights to Europe from USA is what “cheap” genuinely means, because the number changes a lot depending on where you leave from.

Here are the fares you should treat as the “this is a deal” threshold for a round-trip economy ticket:

• East Coast to Western Europe (Dublin, Paris, London, Amsterdam): $350–$480 is a genuine deal. Fares occasionally dip below $300 on flash sales to Dublin or Reykjavik.
• East Coast to Southern or Eastern Europe (Lisbon, Barcelona, Rome, Athens, Budapest): $450–$600 is reasonable. Anything under $450 from New York or Boston is worth jumping on.
• Midwest to Western Europe: $480–$650 is a solid price. Hub competition from Chicago helps keep these lower than you’d expect.
• West Coast to Western Europe: $500–$700 is the norm on a good day. Sub-$500 requires either an off-peak date or a budget-carrier routing with a self-connect.

The dynamic-part cost is real too. A $400 base fare can turn into a $600 total once seats, bags, and fees get added. That’s why comparing the all-in price matters more than the headline number you see on a fare alert.

The Airlines That Actually Sell Cheap Transatlantic Seats

Not every carrier plays the same game. Some exist almost entirely to undercut the legacy airlines on the North Atlantic.

Factor	Budget/Low-Cost Carriers	Full-Service Carriers
Sample airlines	Norse Atlantic, PLAY, French bee, Level	American, Delta, United, British Airways
Typical base fare	$180–$400 one-way	$350–$900 one-way
Bags & seat selection	Almost always extra ($45–$90 each)	Often included on some routes
In-flight meals	Usually buy-on-board	Often included on long-haul
Rebooking flexibility	Limited, fees often heavy	More rebooking options

Budget carriers like Norse Atlantic and PLAY frequently run one-way fares from New York, Boston, and Washington to London, Paris, Oslo, and Reykjavik in the $200 range. The catch is the add-ons: a carry-on, a checked bag, and a seat assignment can add $150 or more to each direction. If you travel light and don’t care where you sit, they’re unbeatable.

Full-service airlines win on the other side of the equation. When American or Delta runs a fare sale, a $450 round-trip that includes a carry-on and seat selection can beat a $350 budget ticket that becomes $520 after fees. Always compare the all-in number before you decide.

For a full breakdown of how carrier groups and their frequent-flyer networks fit together, see our airline alliance comparison.

The Cheapest Time to Fly and When to Book

Timing drives the price of cheap flights to Europe from USA more than almost anything else. Here’s what the data tends to show, year after year.

Best months to fly

• January through early March: the single cheapest window, especially to Northern and Western Europe. Cold, yes—but fares are at their lowest and crowds are thin.
• Late September through early November: the second-best window, often called shoulder season. You get decent weather in the south and fares well below summer peaks.
• Avoid June, July, and the first half of August: this is peak season, and transatlantic fares routinely run $800 to $1,400 round-trip.

When to actually book

• 1 to 3 months before departure is the current sweet spot for most transatlantic routes, according to fare-history studies from travel-search companies. Booking further out doesn’t reliably save you money.
• 6 to 8 weeks out is the specific window many budget carriers drop their lowest fares.
• Weekdays vs weekends: flights departing Tuesday, Wednesday, and Saturday tend to price lower than Friday and Sunday departures. The difference is real but often only $40 to $80 round-trip.

The Cheapest US Departure Airports

Where you fly from determines the floor price more than where you’re flying to. The East Coast has the deepest pool of competition, and competition is what pushes fares down.

These airports consistently produce the lowest transatlantic fares:

• New York (JFK & Newark): the most competition in North America, with legacy carriers, Norse Atlantic, French bee, Level, and dozens of European flag carriers all fighting over the same routes.
• Boston (BOS): strong PLAY, Norse, and Aer Lingus presence keeps Dublin and Reykjavik fares low.
• Washington, DC (IAD/DCA/BWI): multiple hubs plus PLAY and Norse entry in recent years.
• Miami (MIA): Norse Atlantic and the Spanish and Portuguese carriers make this the cheapest southern gateway to Madrid and Lisbon.
• Chicago (ORD): the Midwest’s best fare airport thanks to three-hub competition on Aer Lingus, SAS, and the legacy carriers.

If you live near a smaller regional airport, check whether a cheap positioning flight to one of these hubs plus a separate transatlantic ticket beats a single through ticket. The savings can be $200 or more, though self-connections carry a risk worth weighing.

Where in Europe Is Actually Cheap to Fly To

Not all European destinations cost the same to reach. The cities where low-cost carriers land are consistently cheaper entry points.

• Dublin, Ireland: often the single cheapest European destination from the US. Aer Lingus ran rounds in the $390–$450 range frequently in recent years.
• Reykjavik, Iceland: PLAY and Icelandair make this a bargain, often the cheapest landing spot in Northern Europe.
• London (Gatwick via budget carriers): Norse and French bee keep Gatwick competitive, though Heathrow taxes and fees add up fast.
• Lisbon and Madrid: TAP Air Portugal and Iberia run aggressive promotions from the East Coast.
• Paris (Orly via French bee): French bee’s Newark-to-Orly route routinely prices at half of a legacy Paris ticket.

A smart trick is to fly into one of these cheap gateways and then take a low-cost intra-European flight to your real destination. Ryanair, easyJet, and Wizz Air sell one-way hops for $20–$60 booked in advance, which often beats a direct ticket by hundreds of dollars.

How to Actually Find and Lock In a Cheap Fare

Algorithms move fast, so your process matters more than any single tip. Here’s a repeatable method that works.

• Set price alerts before you’re ready to buy. Google Flights, Skyscanner, and Kayak all let you track a route and get notified when the price drops. This is the single highest-use habit.
• Search flexible dates. Look at a full month view rather than a specific day. Moving a week-end departure by a few days can swing the price $150 or more.
• Compare the all-in price, not the base fare. Many fare-alert tools show a base price that ignores seat fees and bags on budget carriers.
• Check two one-ways. Occasionally two one-way tickets on different carriers beat a round-trip, especially when mixing a budget carrier outbound with a legacy carrier back.
• Book directly with the airline once you find the fare. Direct booking avoids third-party change-fee headaches if plans shift.

If you’re trying to time your purchase, our rundown of how flight price prediction tools work explains what those “buy now or wait” recommendations actually measure.

Frequently Asked Questions

What is the cheapest day of the week to fly to Europe?

Tuesday and Wednesday departures tend to price lower than Friday and Sunday, usually saving $40 to $80 round-trip. The savings come from lower business-travel demand midweek.

How far in advance should I book cheap flights to Europe from USA?

For most transatlantic routes, the best fares appear 1 to 3 months before departure. Booking 6 to 8 weeks out is the sweet spot for budget carriers, while last-minute deals are now rare outside of slow seasons.

Which airlines have the cheapest flights to Europe?

Norse Atlantic, PLAY, French bee, and Level consistently post the lowest base fares, with one-ways under $200 at times. All-in, Aer Lingus, TAP Air Portugal, and Icelandair are often the cheapest full-service options.

Is it cheaper to fly into a different European city and take a train or budget flight?

Usually, yes. Flying into a budget-carrier gateway like Dublin, Reykjavik, or Lisbon and connecting onward with Ryanair, easyJet, or the rail network frequently saves several hundred dollars over a direct ticket.

Are cheap transatlantic tickets fully refundable?

Rarely. The lowest fares are nearly always non-refundable basic economy or budget-carrier seats with heavy change fees. If flexibility matters, compare the airline’s refundable fare against the cost of a separate travel insurance policy.

The Bottom Line

Cheap flights to Europe from USA routes are still findable every single month—you just have to shop the right way. Stay flexible on dates, track a route with a price alert, compare the all-in number instead of the headline base fare, and treat budget-carrier gateways as your entry point rather than your destination. The difference between a $1,000 ticket and a $450 ticket is rarely the airline; it’s almost always the timing and the airport pair you choose.

Book directly when you find a fare you like, and if you’re weighing whether to stretch for a better seat on a long overnight flight, revisit our economy vs premium economy comparison. Happy hunting—and don’t wait: the good fares go first.

For current fare patterns and booking advice, check the travel-tools coverage at NerdWallet and the route and program analysis at The Points Guy.