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Find cheap Icelandair flights to Washington

CMH — SEA
28 Aug — 4 Sep1
1 adult
1 adult, Economy, 0 bags

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Cheapest Icelandair flights from United Kingdom to Washington
Explore the most affordable Icelandair flight options available from United Kingdom to Washington. Find the lowest fares with prices last updated on 29 July 2026.

Tue 25/821:25
LHR
-
SEA
1 stop22h 20m
Icelandair
Mon 7/915:40
SEA
-
LHR
1 stop12h 15m
Icelandair
Deal found 25/7£457
Tue 25/815:40
LGW
-
SEA
1 stop28h 05m
Icelandair
Mon 7/915:40
SEA
-
LGW
1 stop12h 05m
Icelandair
Deal found 25/7£460
Mon 24/815:40
LGW
-
SEA
1 stop28h 05m
Icelandair
Tue 15/919:00
SEA
-
LGW
1 stop11h 40m
Icelandair
Deal found 25/7£463

Flights to Washington with Icelandair at a glance

Find detailed information about Icelandair flights from United Kingdom to Washington. Explore the options provided by Icelandair to plan your journey from United Kingdom to Washington. Data last updated 29 July 2026.

Popular in

July

Cheapest in

January

Average price

£500

Return from

£453

One-way from

£307
Highest demand for flights to Washington with Icelandair; 10% potential price increase.
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Best time to find cheap flights to Washington with Icelandair; 1% potential price drop.
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Average price for flights to Washington with Icelandair (return).
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Icelandair
  • Icelandair
  • 19/10-27/10
  • 2 total stops
  • 52h 10m total
  • United Kingdom to Washington
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Icelandair
  • Icelandair
  • 11/11
  • 1 total stop
  • 12h 45m total
  • United Kingdom to Washington
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Cheapflights Insights

Find cheap Icelandair flights to Washington

How long is the flight to Washington with Icelandair?

On average, Icelandair flights from the United Kingdom to Washington take 11 hours 55 minutes. Flights to Washington from other popular cities in the United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

When is the best time to book a flight to Washington with Icelandair?

The best time to book a flight to Washington with Icelandair is 67 days before departure. On average, fares are higher if you book on the same day as departure.

FAQs for Icelandair flights to Washington

  • Is Icelandair the cheapest airline for a flight to Washington?

    According to our data Air Canada offers the lowest average return price for flights to Washington, although the fare you pay will vary depending on your time and date of travel. Use Cheapflights to compare your options before booking your flight.

  • Do other airlines fly to Washington?

    Airlines such as Virgin Atlantic, British Airways and Alaska Airlines also operate flights to Washington. Check Cheapflights to compare fares from Icelandair and these other carriers.

  • What is the average cost of a flight to Washington with Icelandair?

    A typical Icelandair flight to Washington averages around £543 for a return and £503 for a one-way ticket.

Reviews from Icelandair flights to Washington

See what other users thought of their Icelandair experience.
Icelandair
7.0
Good
716 reviews
Check prices
Overview

Entertainment

6.9

Boarding

7.2

Crew

8.0

Comfort

6.9

Food

6.1

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