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Cheap flights from Thunder Bay to Washington, D.C. Dulles Intl Airport from C$ 539

This is the cheapest round-trip 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.
YQT — IAD
3 Aug — 10 Aug1
1 adult

Cheap 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 29 July 2025.

Round-trip from

C$ 539
Porter Airlines
  • Porter Airlines
  • 26/8-1/9
  • 2 total stops
  • 14h 04m total
  • Thunder Bay to Washington, D.C.
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Find flight deals from Thunder Bay to Dulles Intl

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 29 July 2025.

Tue 26/87:40 a.m.YQT - IAD
1 stop7h 16mPorter Airlines
Mon 1/911:55 a.m.IAD - YQT
1 stop6h 48mPorter Airlines
Deal found 28/7C$ 539
Tue 26/810:15 a.m.YQT - IAD
3 stops31h 39mMultiple Airlines
Mon 1/911:55 a.m.IAD - YQT
2 stops8h 55mMultiple Airlines
Deal found 28/7C$ 879

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 29 July 2025.
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

Tue 26/8

7:40 a.m.-2:56 p.m.

1 stop7h 16m

Washington, D.C. Dulles Intl

Mon 1/9

11:55 a.m.-6:43 p.m.

1 stop6h 48m

C$ 539

Thunder BayWashington, D.C.

YQT - IAD

YQTIAD

Thunder Bay

Tue 26/8

10:15 a.m.-5:54 p.m.

3 stops31h 39m

Washington, D.C. Dulles Intl

Mon 1/9

11:55 a.m.-8:50 p.m.

2 stops8h 55m

C$ 879

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/7

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.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated 29 July 2025.
Get a feel of what it's like to fly with Porter Airlines from Thunder Bay to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
317 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.7

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience
Porter Airlines
8.0
Very good
317 reviews
Porter Airlines
8.0
Very good
317 reviews
Check prices

Comfort

8.0

Boarding

8.2

Crew

8.7

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience

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.

  • 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.

  • What is the cheapest month to book a flight from Thunder Bay to Washington, D.C. Dulles Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from Thunder Bay to Washington, D.C. Dulles Intl Airport (average of C$ 256). Flying from Thunder Bay to Washington, D.C. Dulles Intl Airport in October is currently the most expensive (average of C$ 352). 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.

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

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

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