Flights under £400

Showing return flights for:9 May - 11 May

Boston

Fascinating museums, a bustling port and top sights from TD Garden to Fenway Park—discover Boston, a historic destination also famous for its sports teams.

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Tips for finding flights under £400

Where can I find flight deals for under £400?

You can find cheap flights under £400 on Expedia's deal pages. Be sure to compare direct and indirect flights, as sometimes a short connection can save you money.


Where can I fly for under £400?

Sunny Orlando is just one of the many destinations with cheap round-trip flights under £400. Here you can hit up world-class theme parks like Universal Studios. Book your hotel and park passes with Expedia too for even greater savings. You may also be able to fly to places like Bangkok and Bora Bora; if your dates are flexible, check out the 'Flexible dates' calendar at the top of the search results to see if you can snag flights for under £400.


How do I find flight deals under £400?

If your travel dates are flexible, this may increase your chances of finding cheap international flights under £400, as travelling in the low season can often be cheaper. Generally, flights cost more the closer you book to the departure date.


Where can I find one-way flight deals for under £400?

With Expedia's flight search, you may be able to find one-way flights under £400 to incredible destinations like Cape Town and New York. We suggest checking return prices too, as often these can be cheaper.


Can you recommend any return flights under £400?

Experience your own Californian dream and step into Hollywood as you may be able to find return flights to Los Angeles under £400 with Expedia. Use the search bar to find out what Expedia flights under £400 are available – for example, you may be able to book cheap flights to Marbella for under £400.


Can you recommend any cheap flights under £400 return?

There are lots of exciting places you may be able to travel to with direct flights under £400, like New York. With attractions like the Statue of Liberty, a visit to the Big Apple is a must. You may also be able to get flights to Tokyo for under £400 and explore Japan's bustling capital city.


Can I book international flights under £400?

Booking international flights under £400 is easy with Expedia. If you can, fly midweek as the flights are generally cheaper than on the weekend, and try checking flights to all airports near your destination. If your travel dates aren't set in stone, use the 'Flexible dates' calendar above the search results to see if cheap flights under £400 are available.


What are the best Expedia flights under £400?

One of the best Expedia flights under £400 can include a trip to the dynamic city of Dubai. This popular destination has something for everyone, from the relaxing Jumeirah Beach to the world's tallest building, the Burj Khalifa. With Expedia, you may also be able to find flights under £400 to other destinations, such as Toronto and Singapore.


Why should I book a flight under £400 with Expedia?

Finding cheap flights under £400 2025 is easy with Expedia's search engine. You can also find great discounts on hotels, car hire and tours. And best of all, join Expedia Rewards for free and enjoy bigger savings on all things travel.


Can I change or cancel my flight for under £400 if I need to?

If you need to modify or cancel your Expedia flight under £400, you can do so by heading to My Trip. Most airlines charge a fee for changes or cancellations, so it's a good idea to double-check this before buying. You can easily find the fare rules for tickets when searching through Expedia.


*Prices and availability subject to change. Additional terms may apply.

Terms and Conditions:

Sample prices reflect the lowest fares on Expedia found by our customers over the last 48 hours and are quoted for one adult and include taxes for round trip economy/coach class travel. Prices do not include additional baggage fees that may be charged by the applicable airline. Actual price may vary based on time/date of search, booking date, travel dates, origin, and destination. Fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates. Lower fares on other airlines may be available to selected destinations. Tickets may be non-transferable and non-refundable. Read the complete penalty rules for changes and cancellations applicable to the fare you're considering booking.