£180 Cheap Flights from Washington (IAD) to Key West (EYW)

View £180 flight on Mon, 24 Nov 2025Opens in a new window

Popular airlines from Washington Dulles International Airport (IAD) to Key West Intl. Airport (EYW)

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Cheap Flights from Washington (IAD) to Key West (EYW)

Prices were available within the past 7 days and start at £180 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Washington (IAD) to Key West (EYW)

March is typically the cheapest month to fly

From £141 - £460 per traveller.

Graph displaying average flight prices per month

Flight from Washington to Key West route information
Origin airport
Washington Dulles Intl.
Destination airport
Key West Intl.
Distance
1641 km

Compare flights from Washington to Key West easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Washington to Key West. Operating between them flights per day, 15 airlines cover the route. And fly direct, getting you to Key West Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Washington Dulles Intl. to Key West Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Washington Dulles Intl. (IAD) to Key West Intl. (EYW)

The easiest way to view the best deals on flights from Washington to Key West today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Washington Dulles Intl. to Key West Intl. start at just and range up to .  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Washington and Key West
  • booking your flight during , the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Washington to Key West flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Washington Dulles Intl. to Key West Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW)?
If you're planning on travelling between Washington Dulles Intl. Airport (IAD) and Key West Intl. Airport (EYW), round-trip journeys start from . This price is based on fares advertised within the last 7 days on Expedia for flights departing within the next year, so don't delay. Book now and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport?
Most flights can be cancelled online, but every airline has a different set of terms and conditions. If you do need to cancel your flight, visit our Customer Service Portal and follow the instructions.
How do I find cheap flights from Dulles Intl. Airport to Key West Intl. Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for IAD to Key West Intl. Airport (EYW) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW)?
Around 1,650 kilometres separates Chantilly and Key West, so pack some in-flight entertainment to keep you busy for a few hours. That juicy novel you haven't started will be perfect.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to EYW?
Check out the airfares with United Airlines (UA) if you want to fly straight from IAD to Key West Intl. Airport. This popular carrier operates 4 flights monthly, so you're sure to find one that fits your schedule.
Are Washington Dulles Intl. Airport (IAD) to Key West Intl. Airport (EYW) flight tickets cheaper when they're purchased at the last minute?
Flight prices are constantly going up and down, so it's no sure thing. While last-minute deals between IAD and Key West Intl. Airport are possible, it also makes sense to keep track of prices well before you fly. In fact, some carriers publicize their prices up to 12 months ahead of the departure date. Expedia is continuously updating the biggest bargains around, so keep checking back and be ready to book when the price is right.

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