The Cheapest Summer Flight Deals for 2025, According to New Travel Data

More than three million paid members use Dollar Flight Club to find cheap travel deals. That gives the company quite a lot of data to pull from when it comes to analyzing travel preferences, seasonal travel trends, and, most importantly, what destinations are regularly reached via budget-friendly flights. It just released a report on what destinations are the best for affordable summer travel, based on 500,000 airline booking data sets.

Overall, most airlines are dropping their estimates of how much money they think they’ll make this year. That’s bad news for them, but could be good news for travelers, as they may offer deals to help fill every seat they can. Unfortunately, more and more airlines are also relying on dynamic pricing, using AI technology to adjust ticket costs in real time based on everything from demand to changing fuel costs. “This dynamic pricing model means airfare can fluctuate frequently, requiring travelers to monitor fares closely,” advises Dollar Flight Club CEO Jesse Neugarten in the report.

Dollar Flight Club also advised other tips to save money based on its data, such as booking international flights four to six months in advance, and domestic flights two to three months in advance. That means you want to plan summer international trips by April or mid-May at the latest. To find the average round-trip price (in economy class, naturally), Dollar Flight Club looked at data from the top 10 busiest US airports by passengers data — so the flight estimates below should reflect price trends, no matter where you’re flying from in the US.

Here are the rest of the trends you can expect when it comes to summer flight deals.

International bucket-list destinations are in demand

After the COVID-19 pandemic, it became trendy for travelers to seize the day — and seize on the chance to travel again — by opting for classic bucket-list destinations they’d always wanted to visit. It seems that trend is here to stay, as the Dollar Flight Club report shows users are searching for summer flight deals to tried-and-true destinations.

The top international destinations are those ever-beloved by travelers: Paris, Tokyo, Rome, Cancun, and Bangkok. Surprisingly, some of those are also fairly affordable, showing that sometimes, you can find good summer flight deals, even to in-demand destinations.

If you’re looking for summer flight deals, these are 10 most affordable international cities to visit, along with the average lowest round-trip flight cost from the US this summer.

1. Dubai, Unites Arab Emirates: $900-$1,400
2. Bangkok, Thailand: $750-$1,200
3. Tokyo, Japan: $700-$1,100
4. Barcelona, Spain: $620-$880
5. Rome, Italy: $600-$900
6. Dublin, Ireland: $550-$780
7. Paris, France: $500-$800
8. London, United Kingdom: $500-$750
9. Mexico City, Mexico: $350-$550
10. Cancun, Mexico: $226-$331

If you have your sights set only on that dream European destination, London is still going to be your most affordable option, especially as you can book inexpensive connecting flights to other cities from Heathrow and Gatwick airports. But destinations like Amsterdam, Madrid, and Munich are cheaper than you may think, too.

Looking for the beach? Here’s where to go.

Travelers looking for summer flight deals to beach destinations can also use Dollar Flight Club’s data to plan their trips. While destinations like Honolulu and the Amalfi Coast will always be popular, travelers looking to save money should plan to fly further south. “These destinations offer the same turquoise waters and resort experiences,” offers the analysis, “often at half the price of more well-known alternatives.” Here are the average costs of round-trip flights from the US to five of the cheapest beach destinations this summer:

1. Nassau, Bahamas: $636
2. Belize City, Belize: $626
3. Cartagena, Colombia: $621
4. Liberia, Costa Rica: $614
5. Santo Domingo, Dominican Republic: $548

Cold weather is cool

According to the data, not all travelers are keen on getting a tan and breaking a sweat. Cool- and cold-weather destinations are also trending for summer travel, with the summer flight deals to match. The report attributes it to soaring summer temperatures in the US, which may make travelers keen to feel slightly cooler temps when they step outside. Fortunately, Dollar Flight Club found just as many summer flight deals to cool-weather destinations as it did warm ones. Here’s where to go.

To determine the costs above, Dollar Flight Club averaged the cost of round-trip flights from the 10 busiest airports in the US: Hartsfield-Jackson Atlanta International Airport (ATL), Dallas/Fort Worth International Airport (DFW), Denver International Airport (DEN), Chicago O’Hare International Airport (ORD), Los Angeles International Airport (LAX), Charlotte Douglas International Airport (CLT), Orlando International Airport (MCO), Harry Reid International Airport (LAS), Phoenix Sky Harbor International Airport (PHX), and Miami International Airport (MIA)​. It also asks customers when they sign up what destinations they’re most interested in visiting, and collects data from all searches, as well as its own internal data tracking systems. The costs above represent the lowest average round-trip price for travel between June and August 2025.