
$245 Cheap Icelandair flights from Washington to London (IAD to LGW)
Find The Best Day To Fly from Washington to London
Amazing Icelandair IAD to LGW Flight Deals
The cheapest flights to Gatwick found within the past 7 days were $617 round trip and $245 one way. Prices and availability subject to change. Additional terms may apply.
LGW From IAD Economy Coach Packages on Similar Airlines



Frequently asked questions
Discover our best Icelandair flight from Washington IAD to London LGW
To find the best deals on flights to Washington from London with Icelandair, just enter your travel dates, filter by Icelandair, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.
Return flights from Washington IAD to London LGW with Icelandair
If you’re planning a round trip, booking return flights with Icelandair is usually the most cost-effective option. With airfares ranging from $617 to $630, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply.
Book one-way Icelandair flights from Washington IAD to London LGW
A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way Icelandair flight from Washington to London costs from $245. Prices and availability subject to change. Additional terms may apply.
The easy way to find cheap flights to London LGW from Washington IAD with Icelandair
To find a cheap Icelandair flight from Washington IAD to London LGW, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference.
How to find our best airfare deals on Icelandair flights from Washington IAD to London LGW
If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as October, or if you book a flight with a stopover.
Find nonstop flights from Washington IAD to London LGW with Icelandair
If you’re keen to be on London soil fast, don’t waste time with a stopover—filter your search results to show direct Icelandair flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it.
Flexible airline tickets for Icelandair flights from Washington IAD to London LGW
Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.
There are a lot of reasons to book your flights to London LGW from Washington IAD with Icelandair on Travelocity
At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.
Airport code | Country | Airport name | Number of flights |
---|---|---|---|
KEF | ISL | Keflavik Intl. | 23 |
SEA | USA | Seattle - Tacoma Intl. | 3 |
TPA | USA | Tampa Intl. | 2 |
CPH | DNK | Kastrup | 2 |
SFO | USA | San Francisco Intl. | 2 |
LAX | USA | Los Angeles Intl. | 2 |
MCO | USA | Orlando Intl. | 2 |
HEL | FIN | Vantaa | 2 |
LHR | GBR | Heathrow | 2 |
ORD | USA | O'Hare Intl. | 1 |
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Reviewed on Jun 9, 2025

Reviewed on Jun 9, 2025

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Popular Icelandair Flight Routes from IAD
Top Icelandair Flight Routes from LGW
Domestic
- Washington to Rome (IAD - FCO)
- Boston to London (BOS - LHR)
- San Francisco to Paris (SFO - CDG)
- New York to Dublin (JFK - DUB)
- Los Angeles to London (LAX - LHR)
- New York to Rome (JFK - FCO)
- Chicago to Paris (ORD - CDG)
- New York to Paris (JFK - CDG)
- Boston to Dublin (BOS - DUB)
- Chicago to Rome (ORD - FCO)
International
- Chicago to Rome (ORD - FCO)
- Newark Liberty Intl. Airport to Dublin (EWR - DUB)
- Chicago to Paris (ORD - CDG)
- Newark Liberty Intl. Airport to Paris (EWR - CDG)
- New York to London (JFK - LHR)
- New York to Dublin (JFK - DUB)
- Baltimore to London (BWI - LHR)
- Los Angeles to London (LAX - LHR)
- San Francisco to Paris (SFO - CDG)
- Boston to Paris (BOS - CDG)