CA $404 Cheap Flights from Washington (IAD) to Thunder Bay (YQT)

View CA $404 flight on Sat, Sep 12, 2026Opens in a new window

Popular airlines from Washington Dulles International Airport (IAD) to Thunder Bay, ON (YQT-Thunder Bay Intl.)

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Cheap flights from Washington (IAD) to Thunder Bay (YQT)

Prices were available within the past 7 days and start at CA $404 for one-way flights and CA $758 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Sep 21 - Fri, Sep 25
IAD
Washington
YQT
Thunder Bay
CA $758 Roundtrip, found 3 days ago
CA $758
Roundtrip
found 3 days ago
Select Air Canada flight, departing Mon, Sep 21 from Washington to Thunder Bay, returning Fri, Sep 25, priced at CA $758 found 3 days ago
Air Canada
Sun, Jul 12 - Sat, Jul 18
IAD
Washington
YQT
Thunder Bay
CA $792 Roundtrip, found 3 days ago
CA $792
Roundtrip
found 3 days ago
Select Air Canada flight, departing Sun, Jul 12 from Washington to Thunder Bay, returning Sat, Jul 18, priced at CA $792 found 3 days ago
Air Canada
Mon, Sep 21 - Fri, Sep 25
IAD
Washington
YQT
Thunder Bay
CA $802 Roundtrip, found 3 days ago
CA $802
Roundtrip
found 3 days ago
Select Air Canada flight, departing Mon, Sep 21 from Washington to Thunder Bay, returning Fri, Sep 25, priced at CA $802 found 3 days ago
Air Canada
Mon, Sep 21 - Fri, Sep 25
IAD
Washington
YQT
Thunder Bay
CA $826 Roundtrip, found 3 days ago
CA $826
Roundtrip
found 3 days ago
Select Air Canada flight, departing Mon, Sep 21 from Washington to Thunder Bay, returning Fri, Sep 25, priced at CA $826 found 3 days ago
Porter Airlines
Fri, Sep 18 - Tue, Sep 22
IAD
Washington
YQT
Thunder Bay
CA $835 Roundtrip, found 3 days ago
CA $835
Roundtrip
found 3 days ago
Select Porter Airlines flight, departing Fri, Sep 18 from Washington to Thunder Bay, returning Tue, Sep 22, priced at CA $835 found 3 days ago
Porter Airlines
Mon, Sep 21 - Fri, Sep 25
IAD
Washington
YQT
Thunder Bay
CA $835 Roundtrip, found 3 days ago
CA $835
Roundtrip
found 3 days ago
Select Porter Airlines flight, departing Mon, Sep 21 from Washington to Thunder Bay, returning Fri, Sep 25, priced at CA $835 found 3 days ago
Air Canada
Fri, Jun 5 - Mon, Jun 8
IAD
Washington
YQT
Thunder Bay
CA $841 Roundtrip, found 2 days ago
CA $841
Roundtrip
found 2 days ago
Select Air Canada flight, departing Fri, Jun 5 from Washington to Thunder Bay, returning Mon, Jun 8, priced at CA $841 found 2 days ago
Porter Airlines
Fri, Jun 5 - Mon, Jun 8
IAD
Washington
YQT
Thunder Bay
CA $844 Roundtrip, found 2 days ago
CA $844
Roundtrip
found 2 days ago
Select Porter Airlines flight, departing Fri, Jun 5 from Washington to Thunder Bay, returning Mon, Jun 8, priced at CA $844 found 2 days ago
United
Mon, Sep 21 - Fri, Sep 25
IAD
Washington
YQT
Thunder Bay
CA $883 Roundtrip, found 3 days ago
CA $883
Roundtrip
found 3 days ago
Select United flight, departing Mon, Sep 21 from Washington to Thunder Bay, returning Fri, Sep 25, priced at CA $883 found 3 days ago
WestJet
Sun, Jul 12 - Sat, Jul 18
IAD
Washington
YQT
Thunder Bay
CA $2,155 Roundtrip, found 3 days ago
CA $2,155
Roundtrip
found 3 days ago
Select WestJet flight, departing Sun, Jul 12 from Washington to Thunder Bay, returning Sat, Jul 18, priced at CA $2,155 found 3 days ago

Frequently asked questions

How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.)?
There are approximately 28 connecting flights per day from Washington Dulles Intl. (IAD) to Thunder Bay Intl. (YQT). Some common connection points include O'Hare Intl. (ORD), Pearson Intl. (YYZ), and Liberty Intl. (EWR).
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.)?
The earliest flight from Washington Dulles Intl. (IAD) to Thunder Bay Intl. (YQT) typically departs at approximately 6:00 AM local time, operated by Delta and Air Canada. This is a seasonal service active in December. An early departure like this can help you maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.)?
You'll typically find the most flights from Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.) on a Monday, with around 22 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United Airlines, Air Canada, and Delta Air Lines. Monday offers notably more flight options compared to other days.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.)?
The most popular departure times for flights from Washington Dulles Intl. (IAD) to Thunder Bay Intl. (YQT) are in the morning, between 9am and 12pm. This accounts for around 56% of total traffic. Many major carriers, including Air Canada, Porter Airlines and Delta, offer flights during this window. Many travellers prefer these times as they allow for an early start to their journey, arriving at their destination with plenty of time left in the day.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.)?
Flights from IAD to YQT with one stop typically take around 5 hours 50 minutes, covering approximately 878 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.)?
Select the "Business class" and "First class" filters when looking for IAD to YQT flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Thunder Bay from Washington Dulles Intl. (IAD)?
From Washington Dulles Intl. (IAD), you can fly into Thunder Bay Intl. (YQT) to reach Thunder Bay. Some flights may connect through major hubs like O'Hare Intl. (ORD), Liberty Intl. (EWR), LaGuardia (LGA) before reaching Thunder Bay. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Thunder Bay, ON (YQT-Thunder Bay Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Thunder Bay Intl.
Airlines serving
Porter Airlines, WestJet
Roundtrip price
CA $757
Distance
1405 km

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Chantilly to Thunder Bay Flights

The easy way to book your flights from Washington to Thunder Bay 

With Expedia, it’s simple to find and book flights to Thunder Bay from Washington whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Thunder Bay Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Washington to Thunder Bay today, tomorrow, or this week.  

 

Save dollars with cheap flights from Washington Dulles Intl., IAD to Thunder Bay Intl., YQT 

Sort your search results by price to find great deals on your flight from Washington to Thunder Bay—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Thunder Bay from Washington currently is just CA $758 rising to CA $2,155.  

Here are more money-saving tips: 

  • Fly in September when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Thunder Bay  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Thunder Bay from Washington 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Thunder Bay with Expedia today.

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