Find flights
When to book

Cheap flights from London Luton Airport to Washington, D.C. Dulles Intl Airport from £402

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
LTN — IAD
19 Jun — 26 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Luton to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Luton to Dulles Intl
Explore the most affordable flight options available from Luton to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 May 2026.

Tue 2/609:40
LTN
-
IAD
1 stop14h 45m
Multiple Airlines
Wed 10/621:00
IAD
-
LTN
1 stop19h 15m
Multiple Airlines
Deal found 18/5£495
Wed 17/606:15
LTN
-
IAD
2 stops19h 14m
Multiple Airlines
Thu 9/709:55
IAD
-
LTN
2 stops32h 15m
Multiple Airlines
Deal found 17/5£501
Fri 5/606:20
LTN
-
IAD
1 stop17h 55m
Multiple Airlines
Tue 9/621:10
IAD
-
LTN
1 stop20h 00m
Multiple Airlines
Deal found 20/5£504
Mon 1/620:50
LTN
-
IAD
2 stops22h 40m
Multiple Airlines
Tue 9/616:30
IAD
-
LTN
2 stops22h 40m
Multiple Airlines
Deal found 18/5£508
Fri 5/606:20
LTN
-
IAD
1 stop14h 25m
Multiple Airlines
Mon 8/621:00
IAD
-
LTN
1 stop10h 45m
Multiple Airlines
Deal found 16/5£517
Wed 3/606:15
LTN
-
IAD
1 stop14h 30m
Multiple Airlines
Wed 10/621:00
IAD
-
LTN
1 stop10h 35m
Multiple Airlines
Deal found 19/5£518
Thu 4/609:25
LTN
-
IAD
1 stop14h 35m
Multiple Airlines
Sun 7/617:15
IAD
-
LTN
1 stop13h 10m
Multiple Airlines
Deal found 16/5£518
Tue 16/613:10
LTN
-
IAD
1 stop11h 15m
Multiple Airlines
Mon 22/621:00
IAD
-
LTN
1 stop13h 45m
Multiple Airlines
Deal found 16/5£519
Wed 8/706:15
LTN
-
IAD
1 stop14h 30m
Multiple Airlines
Tue 14/717:15
IAD
-
LTN
1 stop11h 00m
Multiple Airlines
Deal found 17/5£522
Fri 12/606:20
LTN
-
IAD
1 stop14h 25m
Multiple Airlines
Mon 15/621:00
IAD
-
LTN
1 stop10h 45m
Multiple Airlines
Deal found 16/5£523
Mon 29/608:15
LTN
-
IAD
1 stop12h 30m
Multiple Airlines
Mon 6/717:15
IAD
-
LTN
1 stop11h 00m
Multiple Airlines
Deal found 15/5£524
Thu 25/613:00
LTN
-
IAD
1 stop11h 00m
Multiple Airlines
Tue 30/621:10
IAD
-
LTN
1 stop20h 00m
Multiple Airlines
Deal found 18/5£525

Find flight deals from Luton to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Luton (LTN) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 20 May 2026.

Round-trip from

£495

One-way from

£402

Popular in

July

Cheapest in

February

Average price

£554
2/6-10/6
  • 2/6-10/6
  • 2 total stops
  • 34h 00m total
  • London to Washington, D.C.
Search Deals
26/8
  • 26/8
  • 1 total stop
  • 29h 45m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£42 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Luton to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 20 May 2026.
Use the filters below to find and compare flights from London Luton Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Fri 5/6

06:20-15:45

1 stop14h 25m

Washington, D.C. Dulles Intl

Mon 8/6

21:00-12:45

1 stop10h 45m

£517

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Thu 2/7

18:05-22:15

2 stops33h 10m

Washington, D.C. Dulles Intl

Wed 15/7

20:30-22:10

2 stops20h 40m

£567

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Fri 12/6

12:50-17:00

2 stops33h 10m

Washington, D.C. Dulles Intl

Fri 19/6

20:20-00:30

2 stops23h 10m

£635

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Wed 16/9

06:20-19:25

2 stops18h 05m

Washington, D.C. Dulles Intl

Sun 20/9

20:55-13:25

1 stop11h 30m

£637

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Wed 24/6

06:15-19:01

3 stops17h 46m

Washington, D.C. Dulles Intl

Mon 6/7

17:15-00:30

3 stops26h 15m

£659
Fastest return journey

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Sun 7/6

09:00-15:45

1 stop11h 45m

Washington, D.C. Dulles Intl

Sun 14/6

21:00-11:25

1 stop9h 25m

£662

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Thu 9/7

07:05-19:00

2 stops16h 55m

Washington, D.C. Dulles Intl

Wed 15/7

17:15-16:35

2 stops18h 20m

£700

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Wed 26/8

20:35-20:35

3 stops29h 00m

Washington, D.C. Dulles Intl

Wed 23/9

22:20-00:30

2 stops21h 10m

£721

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Mon 1/6

06:05-15:35

2 stops14h 30m

Washington, D.C. Dulles Intl

Mon 8/6

21:45-15:50

1 stop13h 05m

£797

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Wed 11/11

08:00-18:30

1 stop15h 30m

Washington, D.C. Dulles Intl

Wed 25/11

19:40-12:55

1 stop12h 15m

£842

Flights are sorted by cheapest return flights first.

Deals found on 19/5

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Luton to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Luton with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Luton Airport to Washington, D.C. Dulles Intl Airport

How often are flights from London to Washington, D.C. delayed?

About 0% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 0 minutes.

What is the most punctual flight time for London to Washington, D.C. flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Related info for your journey

Find useful and relevant information for your journey from Luton to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from Luton to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Luton to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Luton to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Luton to Dulles Intl.

  • Can I find deals for business class flights from Luton to Dulles Intl?

    Yes. Cheapflights offers flight deals from Luton to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Travelling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Gaithersburg
Woodbridge
Arlington
Alexandria
Sterling

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Luton to Dulles Intl?

Deals for Luton to Dulles Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Luton to Dulles Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Luton to Dulles Intl.

Can Cheapflights find flights from Luton to Dulles Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Luton to Dulles Intl flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Luton to Dulles Intl become cheaper?

Yes! Start tracking prices for Luton to Dulles Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.