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Cheap Business Class flights to Washington, D.C. Dulles Intl Airport

LHR — IAD
17 Apr — 24 Apr1
1 adult
1 adult, Business, 0 bags

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Cheap business class flights to Washington, D.C. Dulles Intl Airport in 2026

Find the latest flights to Washington, D.C. Dulles Intl Airport in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data were last updated on 18 March 2026.

Top Rated Airline

Icelandair

No. of Airlines

8
Most popular airline to fly business class with to Dulles Intl in the past 7 days
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Find business class flight deals to Washington, D.C. Dulles Intl Airport

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Cheapest business class flights to Dulles Intl
Explore the most affordable business class flight options available to Dulles Intl. Find the lowest fares based on data from user searches, with prices last updated on 18 March 2026.

Fri 10/712:15
LHR
-
IAD
Nonstop8h 15m
Austrian Airlines
Sun 19/718:30
IAD
-
LHR
Nonstop7h 25m
Austrian Airlines
Deal found 15/3£1,341
Mon 20/415:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Sun 26/420:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 16/3£1,424
Mon 20/421:25
LHR
-
IAD
1 stop26h 55m
Icelandair
Sun 26/420:30
IAD
-
LHR
1 stop18h 50m
Icelandair
Deal found 16/3£1,424
Sat 27/616:40
LHR
-
IAD
Nonstop8h 20m
Austrian Airlines
Fri 10/722:15
IAD
-
LHR
Nonstop7h 25m
Austrian Airlines
Deal found 15/3£1,436
Wed 22/415:40
LGW
-
IAD
1 stop32h 40m
Icelandair
Sun 26/420:30
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 16/3£1,446
Sun 10/521:25
LHR
-
IAD
1 stop26h 55m
Icelandair
Wed 13/523:20
IAD
-
LHR
1 stop16h 00m
Icelandair
Deal found 16/3£1,457

Travel insights for business class flights from United Kingdom to Dulles Intl

Get recent, data-driven insights about business class flights from United Kingdom to Dulles Intl including ideal travel times, pricing trends, and more.

What is the cheapest month to book a Business Class flight from United Kingdom to Washington, D.C. Dulles Intl Airport?

Currently, October is the cheapest month in which you can book a Business Class flight from United Kingdom to Washington, D.C. Dulles Intl Airport (average of £992). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of £2,205). There are several factors that can impact the price of a flight, so comparing airlines, departure airports, and flight times can provide users with more options.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 66.0 mm.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

Frequently asked questions about Washington, D.C. Dulles Intl Airport business class tickets

Find answers to common questions related to business class tickets for flights to Washington, D.C. Dulles Intl Airport. Get information on booking, amenities, upgrade options, and more. This FAQ section was last updated on 18 March 2026.

  • How many premium cabins does Finnair have for flights to Washington, D.C. Dulles Intl Airport?

    Finnair has 3 premium cabins on its schedule for flights to Washington, D.C. Dulles Intl Airport: Prem Economy Class, Business Class and First Class. If you prefer to see more cabin class options, you can try switching up different departure and/or arrival dates.

  • What is the cheapest month to book a Business Class flight from United Kingdom to Washington, D.C. Dulles Intl Airport?

    Currently, October is the cheapest month in which you can book a Business Class flight from United Kingdom to Washington, D.C. Dulles Intl Airport (average of £992). Flying from United Kingdom to Washington, D.C. Dulles Intl Airport in February is currently the most expensive (average of £2,205). There are several factors that can impact the price of a flight, so comparing airlines, departure airports, and flight times can provide users with more options.

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