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Cheap flights from Thunder Bay to Washington, D.C. Dulles Intl Airport from C$ 318

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
YQT — IAD
20 Feb — 27 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Thunder Bay to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Thunder Bay to Dulles Intl
Explore the most affordable flight options available from Thunder Bay to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 January 2026.

Sun 1/310:40 a.m.
YQT
-
IAD
1 stop6h 34m
Porter Airlines
Wed 4/311:40 a.m.
IAD
-
YQT
1 stop8h 02m
Porter Airlines
Deal found 19/1C$ 740
Sun 1/35:00 a.m.
YQT
-
IAD
1 stop10h 46m
Air Canada
Wed 4/34:30 p.m.
IAD
-
YQT
1 stop6h 35m
Air Canada
Deal found 20/1C$ 755
Sun 1/35:00 a.m.
YQT
-
IAD
2 stops26h 29m
United Airlines
Wed 4/310:22 p.m.
IAD
-
YQT
2 stops20h 03m
United Airlines
Deal found 20/1C$ 759

Find flight deals from Thunder Bay to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Thunder Bay (YQT) 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 21 January 2026.

Round-trip from

C$ 740

One-way from

C$ 318
Porter Airlines
  • Porter Airlines
  • 1/3-4/3
  • 2 total stops
  • 14h 36m total
  • Thunder Bay to Washington, D.C.
Search Deals
Porter Airlines
  • Porter Airlines
  • 6/3
  • 1 total stop
  • 6h 44m total
  • Thunder Bay to Washington, D.C.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Thunder Bay 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 629,999 searches. Data last updated 21 January 2026.
Use the filters below to find and compare flights from Thunder Bay to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Thunder Bay

Fly to

Dulles Intl

Route

Depart

Return

Price

Thunder BayWashington, D.C.

YQT - IAD

YQTIAD

Thunder Bay

Sun 1/3

10:40 a.m.-5:14 p.m.

1 stop6h 34m

Washington, D.C. Dulles Intl

Wed 4/3

11:40 a.m.-7:42 p.m.

1 stop8h 02m

C$ 740

Thunder BayWashington, D.C.

YQT - IAD

YQTIAD

Thunder Bay

Sun 1/3

5:00 a.m.-3:46 p.m.

1 stop10h 46m

Washington, D.C. Dulles Intl

Wed 4/3

4:30 p.m.-11:05 p.m.

1 stop6h 35m

C$ 755

Thunder BayWashington, D.C.

YQT - IAD

YQTIAD

Thunder Bay

Sun 1/3

5:00 a.m.-7:29 a.m.

2 stops26h 29m

Washington, D.C. Dulles Intl

Wed 4/3

10:22 p.m.-6:25 p.m.

2 stops20h 03m

C$ 759

Thunder BayWashington, D.C.

YQT - IAD

YQTIAD

Thunder Bay

Fri 6/3

10:30 a.m.-5:14 p.m.

1 stop6h 44m

C$ 318

Thunder BayWashington, D.C.

YQT - IAD

YQTIAD

Thunder Bay

Fri 6/3

11:50 a.m.-7:24 a.m.

3 stops19h 34m

C$ 355

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/1

Best time to book a flight from Thunder Bay to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Thunder Bay with our price prediction graph.
Estimated round-trip 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.

Related info for your journey

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

  • What airport do you fly from for flights from Thunder Bay to Washington, D.C. Dulles Intl?

    Most people fly from Thunder Bay (YQT) if they book a flight from Thunder Bay to Washington, D.C. Dulles Intl. On average, Thunder Bay has 0 outbound flights to Washington, D.C. Dulles Intl per day from 0 airlines. Thunder Bay is conveniently located just 5.6 km from Thunder Bay’s city centre.

  • How long is the flight from Thunder Bay to Washington, D.C. Dulles Intl Airport?

    A quick flight from Thunder Bay to Washington, D.C. Dulles Intl Airport can take about 6h 34m. Porter Airlines provides one of the quickest options available for as low as C$ 740. The distance between Thunder Bay and Washington, D.C. Dulles Intl Airport is about 1413 km. This flight may include one or multiple stops.

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

    Yes. In addition to deals on Thunder Bay to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

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

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

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

    Yes. Cheapflights offers flight deals from Thunder Bay 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.

See more FAQs

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
Warrenton
Winchester
Hanover
Fairfax
Reston
Ellicott City
Oxon Hill
Gaithersburg
Arlington
Herndon
Manassas
Fredericksburg
Alexandria
Rockville

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

Need flexible booking options for your flight to Dulles Intl from Thunder Bay? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights offers price alerts on Thunder Bay to Dulles Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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