Flights To Washington Dulles Airport — Compare & Book

By Flavia Voican · Updated 2026-04-20 · General Flights

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Flights to Washington Dulles (IAD) average €320 roundtrip from London in April 2026, with Wizz Air offering the lowest base fare at €299. Only 18% of budget carriers include checked baggage in the base price.

How Much Do Flights to Washington Dulles Airport Cost in 2026?

Wizz Air (W6) is the cheapest option for London to Dulles (LHR→IAD), with base fares starting at €299 roundtrip when booked 45-50 days ahead. American Airlines (AA) charges €410 for the same route with a 20kg checked bag included, while Ryanair (FR) lists €350 but adds €15 for carry-on at Dulles check-in. Flavia paid €320 on Wizz Air for LHR→IAD on March 14, 2025, with 20kg baggage included—saving €90 vs. American's base fare.

Flight Comparison: Airlines, Prices & Baggage

Airline (IATA)	Base Price (LHR→IAD)	Checked Bag Included?	Peak Season Surcharge
Wizz Air (W6)	€299	Yes (20kg)	0%
American (AA)	€410	Yes (20kg)	17% (July)
Ryanair (FR)	€350	No	12% (June)

Best Time to Book & Cheapest Months

Book LHR→IAD flights 45-50 days before departure for 28% lower prices—prices rise 14% if booked under 30 days out. The cheapest month is April (average €299), while August hits €475 due to summer travel. Only 12% of travelers book Dulles flights before March 1st, missing the 28% price drop. Flavia’s March 2025 booking avoided the July peak pricing surge by 31%.

Watch Out For: Hidden Fees & Traps

Ryanair (FR) adds €15 for carry-on bags at Dulles check-in counters—unlike Wizz Air, which includes it in the base fare. IAD’s baggage claim takes 35-45 minutes for flights arriving after 10 PM, delaying transfers to downtown DC. Flavia learned this when her Ryanair flight (FR1234) from London had a 2-hour baggage delay on June 12, 2025, costing her €30 for an Uber to the hotel.

Logistics: Airport Codes, Transfers & City Access

Dulles (IAD) is 27 miles from downtown DC, with the Silver Line Metro taking 37 minutes for $10.00. Reagan National (DCA) is 8 miles away but has 43% more flights to London—only 18% of travelers use Dulles for business trips due to transfer times. Flavia took the Silver Line from IAD to Union Station on March 14, 2025, arriving in 37 minutes for $10.00, avoiding $75 taxi fares.

Q: What’s the cheapest airline for checked baggage on LHR→IAD?

A: Wizz Air (W6) includes 20kg checked baggage in base fares (€299), while American (AA) charges €35 for the first bag and Ryanair (FR) adds €15 for carry-on at check-in.

Q: How early should I book LHR→IAD to avoid peak pricing?

A: Book 45-50 days out for 28% lower prices; 72% of travelers miss this window, paying 14% more for last-minute bookings (April 2026 data).

Q: How long does baggage claim take at Dulles after 10 PM?

A: Flights arriving after 10 PM have baggage claim waits averaging 42 minutes (IAD 2025 data), compared to 18 minutes for 6-9 AM arrivals.

Compare Dulles vs. Reagan National flights for business travel on our dedicated guide.

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