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Niagara-on-the-Lake

$71+ Cheap flights from Washington, D.C. (WAS) to Niagara-on-the-Lake, Canada

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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YYZ
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to Niagara-on-the-Lake are usually found in February or June, booked 88 days in advance, depart on a Friday or Thursday and return on a Friday

Cheap flight deals from Washington, D.C. to Niagara-on-the-Lake

Keep the following information in mind while searching for Washington, D.C. to Niagara-on-the-Lake flight deals. Data was last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$188
(Mytrip)

One-way from

$71
(Kiwi.com)

Popular in

October

Cheapest in

February

Average price

$354
Provider with most accurate pricing for Washington, D.C. (WAS)-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Toronto (YTO) flights.
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From Washington, D.C. (WAS) to Niagara-on-the-Lake
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One-way flight from Washington, D.C. (WAS) to Niagara-on-the-Lake
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Highest demand for flights based on searches. 7% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Washington, D.C. to Niagara-on-the-Lake

Cheapest flights from Washington, D.C. to Niagara-on-the-Lake
Explore the most affordable flight options available from Washington, D.C. to Niagara-on-the-Lake. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Flightnetwork deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:00 amDCA - YYZ
1 stop5h 40mAir Canada
Fri 11/285:00 pmYYZ - DCA
1 stop4h 56mAir Canada
Deal found 10/28$224
This Mytrip deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:00 amDCA - YYZ
1 stop4h 49mAir Canada
Sun 11/236:20 amYYZ - DCA
1 stop4h 06mAir Canada
Deal found 10/28$225
This Ticket deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/209:45 amIAD - YYZ
1 stop5h 49mAir Canada
Sun 11/239:00 amYYZ - IAD
1 stop7h 21mAir Canada
Deal found 10/28$233
This flugladen.de deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/299:45 amIAD - YYZ
1 stop4h 55mAir Canada
Sat 12/66:55 pmYYZ - IAD
Nonstop1h 31mAir Canada
Deal found 10/27$238
This flugladen.de deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/296:59 amDCA - YYZ
Nonstop1h 36mAir Canada
Sat 12/64:30 pmYYZ - DCA
Nonstop1h 35mAir Canada
Deal found 10/27$239
This Booking.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/294:10 pmDCA - YYZ
1 stop5h 34mAir Canada
Fri 12/59:00 amYYZ - DCA
1 stop6h 31mAir Canada
Deal found 10/27$240
This Kiwi.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/274:25 pmBWI - YYZ
1 stop7h 46mMultiple Airlines
Tue 12/27:15 amYYZ - BWI
1 stop27h 06mMultiple Airlines
Deal found 10/27$242
This Air Canada deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/212:55 pmDCA - YYZ
1 stop4h 41mAir Canada
Tue 12/29:00 pmYYZ - DCA
Nonstop1h 35mAir Canada
Deal found 10/29$246
This Booking.com deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/286:50 pmDCA - YYZ
Nonstop1h 37mAir Canada
Fri 12/59:00 amYYZ - DCA
1 stop6h 31mAir Canada
Deal found 10/27$247
This Booking.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/274:30 pmIAD - YYZ
Nonstop1h 33mAir Canada
Sat 11/297:10 amYYZ - IAD
1 stop4h 29mAir Canada
Deal found 10/28$247
This Mytrip deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:00 amDCA - YYZ
1 stop4h 49mAir Canada
Tue 11/187:20 amYYZ - DCA
Nonstop1h 35mAir Canada
Deal found 10/28$249
This Kiwi.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/117:06 pmBWI - YYZ
1 stop19h 34mMultiple Airlines
Sun 12/148:00 pmYYZ - BWI
1 stop11h 42mMultiple Airlines
Deal found 10/28$250

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Niagara-on-the-Lake 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 2,558,603 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Niagara-on-the-Lake that are best for you.

Fly from

Washington, D.C.

Fly to

Niagara-on-the-Lake

Route

Depart

Return

Price

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Wed 11/26

6:59 am-8:35 am

Nonstop1h 36m

Toronto Pearson Intl

Fri 11/28

5:00 pm-9:56 pm

1 stop4h 56m

$226

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Tue 11/25

7:30 am-2:01 pm

1 stop6h 31m

Toronto Pearson Intl

Tue 11/25

4:30 pm-6:05 pm

Nonstop1h 35m

$250

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sun 11/30

10:11 pm-11:46 pm

Nonstop1h 35m

Toronto Pearson Intl

Tue 12/2

7:40 pm-9:20 pm

Nonstop1h 40m

$264

Washington, D.C.Toronto

DCA - YYZ

DCAYYZ

Washington, D.C. Reagan-National

Sat 11/22

8:40 pm-10:17 pm

Nonstop1h 37m

Toronto Pearson Intl

Tue 11/25

9:00 pm-10:35 pm

Nonstop1h 35m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Wed 11/26

10:11 pm-11:46 pm

Nonstop1h 35m

Toronto Pearson Intl

Thu 11/27

7:40 pm-9:20 pm

Nonstop1h 40m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Wed 11/26

12:35 pm-2:14 pm

Nonstop1h 39m

Toronto Pearson Intl

Mon 1/19

2:45 pm-4:30 pm

Nonstop1h 45m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Mon 12/1

10:11 pm-11:46 pm

Nonstop1h 35m

Toronto Pearson Intl

Sat 12/6

2:45 pm-4:27 pm

Nonstop1h 42m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sun 11/30

5:15 pm-6:57 pm

Nonstop1h 42m

Toronto Pearson Intl

Wed 12/3

2:45 pm-4:27 pm

Nonstop1h 42m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sat 11/29

12:35 pm-2:14 pm

Nonstop1h 39m

Toronto Pearson Intl

Tue 12/9

2:45 pm-4:27 pm

Nonstop1h 42m

$264

Washington, D.C.Toronto

IAD - YYZ

IADYYZ

Washington, D.C. Dulles Intl

Sun 11/23

10:11 pm-11:46 pm

Nonstop1h 35m

Toronto Pearson Intl

Sun 1/25

7:40 pm-9:25 pm

Nonstop1h 45m

$264

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 60 results
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Best time to book a flight from Washington, D.C. to Niagara-on-the-Lake

Have a flexible travel schedule? Discover the best time to fly to Niagara-on-the-Lake from Washington, D.C. 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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Niagara-on-the-Lake

How far ahead should I book a flight from Washington, D.C. to Niagara-on-the-Lake?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Niagara-on-the-Lake. Price data was last updated on October 24, 2025.

The best time to book flights from Washington, D.C. to Niagara-on-the-Lake is 88 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. to Niagara-on-the-Lake?

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to Niagara-on-the-Lake (average of $91). Flying from Washington, D.C. to Niagara-on-the-Lake in August is currently the most expensive (average of $171). 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.

What is the cheapest time of day to fly from WAS to N1A?

Find hourly flight availability from Washington, D.C. to Niagara-on-the-Lake. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to Niagara-on-the-Lake at noon. If you’re flexible enough to do this you can expect to save up to 42% on your trip compared to booking a flight in the evening.

What is the cheapest day to fly from Washington, D.C. to Niagara-on-the-Lake?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Niagara-on-the-Lake. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. to Niagara-on-the-Lake flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Washington, D.C. to Niagara-on-the-Lake?

Reviews of airlines servicing Niagara-on-the-Lake

Get insights into the airlines that provide service to Niagara-on-the-Lake. 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 Niagara-on-the-Lake. Reviews last updated October 29, 2025.
Read reviews from past customers who have flown Porter Airlines, Delta, and United Airlines from Washington, D.C. to Niagara-on-the-Lake. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
384 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.0

Crew

8.6

Food

7.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
8.0
Very good
384 reviews
Porter Airlines
8.0
Very good
384 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.0

Crew

8.6

Food

7.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Delta
7.9
Good
7,994 reviews
Porter Airlines
8.0
Very good
384 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.0

Crew

8.6

Food

7.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
9,001 reviews
Porter Airlines
8.0
Very good
384 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.0

Crew

8.6

Food

7.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
American Airlines
7.2
Good
11,032 reviews
Porter Airlines
8.0
Very good
384 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.0

Crew

8.6

Food

7.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,371 reviews
Porter Airlines
8.0
Very good
384 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.0

Crew

8.6

Food

7.6

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Niagara-on-the-Lake. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. to Niagara-on-the-Lake?

    Airlines like Air Canada and United Airlines fly from Washington, D.C. to Niagara-on-the-Lake in about 1h 35m. The time it takes to get you to your destination is usually consistent. The distance from Washington, D.C. to Niagara-on-the-Lake is about 346 mi. Most flights are nonstop.

  • What are the cheapest airlines to fly from Washington, D.C. to Niagara-on-the-Lake one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $107. United Airlines flights start at $107 while deals on Air Canada start at $107 one-way.

  • What are the most popular routes from Washington, D.C. to Niagara-on-the-Lake?

    While some choose either Washington, D.C. Dulles Intl - Toronto Pearson Intl or Baltimore/Washington - Toronto Pearson Intl, Washington, D.C. Reagan-National - Toronto Pearson Intl is the most popular route from Washington, D.C. to Niagara-on-the-Lake.

  • What are the most reliable airlines from Washington, D.C. to Niagara-on-the-Lake?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. to Niagara-on-the-Lake on time: Republic Airways (93%), United Airlines (93%), Air Canada (92%).

  • What are the cheapest flights from Washington, D.C. to Niagara-on-the-Lake?

    The cheapest flight price from Washington, D.C. to Niagara-on-the-Lake is $106. On average you can expect to pay $853. The most popular route, (Washington, D.C. Reagan-National - Toronto Pearson Intl), can usually be booked for $246.

  • Can I find deals for flights from Washington, D.C. to Niagara-on-the-Lake that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Niagara-on-the-Lake flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Niagara-on-the-Lake?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Niagara-on-the-Lake.

  • Can I find deals for business class flights from Washington, D.C. to Niagara-on-the-Lake?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Niagara-on-the-Lake 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 Washington, D.C. to Niagara-on-the-Lake?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to Niagara-on-the-Lake (average of $91). Flying from Washington, D.C. to Niagara-on-the-Lake in August is currently the most expensive (average of $171). 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

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Alternative routes for Washington, D.C. to Niagara-on-the-Lake

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Pearson Intl flights
Reagan-National to Pearson Intl flights
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Dulles Intl to London flights
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Dulles Intl to Sudbury flights
Reagan-National to Thunder Bay flights
Reagan-National to Windsor flights
Dulles Intl to Timmins flights
Reagan-National to Kingston flights
Reagan-National to Hamilton flights
Dulles Intl to Kingston flights

Top 7 airlines flying from Washington, D.C. to Niagara-on-the-Lake

Discover the top 7 airlines that operate flights from Washington, D.C. to Niagara-on-the-Lake. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$54Average$277FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$127Average$340FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$144Average$322FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$176Average$246FlexibilityNo cancel feeOn-time50%
American AirlinesCheapest$253Average$394FlexibilityNo cancel feeOn-time71%
DeltaCheapest$255Average$317FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$319Average$568FlexibilityNo cancel feeOn-time60%

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