$240 Cheap Flights from Washington (IAD) to Thunder Bay (YQT)

View $240 flight on Tue, Apr 14, 2026Opens in a new window

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

Cheap Flights from Washington to Thunder Bay (IAD-YQT)

Prices were available within the past 7 days and start at $240 for one-way flights and $512 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Jun 22 - Sat, Jun 27
IAD
Washington
YQT
Thunder Bay
$512 Roundtrip, found 3 days ago
$512
Roundtrip
found 3 days ago
Select Air Canada flight, departing Mon, Jun 22 from Washington to Thunder Bay, returning Sat, Jun 27, priced at $512 found 3 days ago
Porter Airlines
Thu, Nov 20 - Wed, Dec 3
IAD
Washington
YQT
Thunder Bay
$540 Roundtrip, found 5 days ago
$540
Roundtrip
found 5 days ago
Select Porter Airlines flight, departing Thu, Nov 20 from Washington to Thunder Bay, returning Wed, Dec 3, priced at $540 found 5 days ago
Porter Airlines
Sun, Nov 23 - Mon, Dec 8
IAD
Washington
YQT
Thunder Bay
$553 Roundtrip, found 5 days ago
$553
Roundtrip
found 5 days ago
Select Porter Airlines flight, departing Sun, Nov 23 from Washington to Thunder Bay, returning Mon, Dec 8, priced at $553 found 5 days ago
United
Mon, Jun 22 - Sat, Jun 27
IAD
Washington
YQT
Thunder Bay
$556 Roundtrip, found 3 days ago
$556
Roundtrip
found 3 days ago
Select United flight, departing Mon, Jun 22 from Washington to Thunder Bay, returning Sat, Jun 27, priced at $556 found 3 days ago
Porter Airlines
Sat, Nov 22 - Mon, Dec 8
IAD
Washington
YQT
Thunder Bay
$557 Roundtrip, found 5 days ago
$557
Roundtrip
found 5 days ago
Select Porter Airlines flight, departing Sat, Nov 22 from Washington to Thunder Bay, returning Mon, Dec 8, priced at $557 found 5 days ago
Porter Airlines
Sun, Nov 23 - Thu, Dec 11
IAD
Washington
YQT
Thunder Bay
$558 Roundtrip, found 5 days ago
$558
Roundtrip
found 5 days ago
Select Porter Airlines flight, departing Sun, Nov 23 from Washington to Thunder Bay, returning Thu, Dec 11, priced at $558 found 5 days ago
Porter Airlines
Sun, Nov 23 - Fri, Dec 12
IAD
Washington
YQT
Thunder Bay
$560 Roundtrip, found 5 days ago
$560
Roundtrip
found 5 days ago
Select Porter Airlines flight, departing Sun, Nov 23 from Washington to Thunder Bay, returning Fri, Dec 12, priced at $560 found 5 days ago
Porter Airlines
Sat, Nov 22 - Thu, Dec 11
IAD
Washington
YQT
Thunder Bay
$562 Roundtrip, found 5 days ago
$562
Roundtrip
found 5 days ago
Select Porter Airlines flight, departing Sat, Nov 22 from Washington to Thunder Bay, returning Thu, Dec 11, priced at $562 found 5 days ago
Porter Airlines
Sat, Nov 22 - Fri, Dec 12
IAD
Washington
YQT
Thunder Bay
$564 Roundtrip, found 5 days ago
$564
Roundtrip
found 5 days ago
Select Porter Airlines flight, departing Sat, Nov 22 from Washington to Thunder Bay, returning Fri, Dec 12, priced at $564 found 5 days ago
Porter Airlines
Sat, Nov 22 - Sun, Dec 7
IAD
Washington
YQT
Thunder Bay
$580 Roundtrip, found 5 days ago
$580
Roundtrip
found 5 days ago
Select Porter Airlines flight, departing Sat, Nov 22 from Washington to Thunder Bay, returning Sun, Dec 7, priced at $580 found 5 days ago

Alternative airports near Thunder Bay

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Thunder Bay Intl. YQT. Cheapest and Closest option available. Average driving time to city center is 6 minutes. Flights from $616
YQT
Thunder Bay Intl.
CheapestClosest
Average driving time to city center6 min
Flights from $616
Flights from Washington (IAD) to Thunder Bay (YQT)
Origin airport
Washington Dulles Intl.
Destination airport
Thunder Bay Intl.
Roundtrip price
$512
Distance
878 mi

Washington to Thunder Bay Flights

The cheapest times to fly from Washington to Thunder Bay

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Thunder Bay are during the month of June. You can find some of the cheapest flights from Washington to Thunder Bay with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Thunder Bay

Sunday is one of the best days to book for cheap flights from Washington to Thunder Bay: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Thunder Bay

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Thunder Bay in 2025. You can also book with separate airlines for your outbound and return journeys, from $240 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Thunder Bay flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Thunder Bay airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Thunder Bay Intl. Airport (YQT) cost?
Secure a cheap one-way flight from $240 or cheap return flight from $512 from Washington Dulles Intl. Airport (IAD) to Thunder Bay Intl. Airport (YQT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Thunder Bay Intl. Airport (YQT)?
Planning your getaway for June is a good way to save, as it's the cheapest month for flights between IAD and YQT. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Thunder Bay Intl. Airport (YQT)?
To find the cheapest airline flying from IAD to YQT, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Thunder Bay Intl. Airport (YQT)?
Direct flights from Washington Dulles Intl. Airport (IAD) to Thunder Bay Intl. Airport (YQT) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to YQT?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* However, this can vary based on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Thunder Bay Intl. Airport (YQT)?
To avoid potential delays on the Washington Dulles Intl. Airport (IAD) to Thunder Bay Intl. Airport (YQT) route, fly before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Thunder Bay Intl. Airport (YQT) last-minute?
Booking your flight from IAD to YQT right before your trip is usually more expensive. But if there's some wiggle room with your departure times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book an IAD to YQT flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAD to YQT flight and hotel package with Expedia could result in significant savings. Better yet, having it all in one place will take the stress out of travel planning. Just secure your flights and choose from our wide range of stays, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Thunder Bay Intl. Airport (YQT)?
Typically, you can modify or cancel your IAD to YQT flight. However, additional charges may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's guidelines and fees on flight changes, or if you want more information, head to our Customer Service portal.

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*Available to One Key members.