Cheap flights from Ontario to District of Columbia from $94
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to District of Columbia departing on 5/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Round-trip
1 adult
Economy
0 bags
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Round-trip
One-way
Last minute
Cheap round-trip flights
These are some of the best round-trip flight deals from Ontario to District of Columbia that have been recently found on momondo from popular airlines, departing in the coming months.
Cheap one-way flights
Flying one-way? These are some of the best deals recently discovered on momondo for flights from Ontario to District of Columbia.
Cheap last minute flights
Planning a quick getaway from Ontario to District of Columbia? These are the last-minute flight deals available now.
Frontier flights from Ontario to District of Columbia
Our best Frontier deals on Ontario to District of Columbia flight tickets
Frontier![Frontier]()
May 24![Frontier]()
May 28
ONT5:15 pmOntario
9h 40m
1 stop
IAD5:55 amWashington, D.C. Dulles Intl
IAD7:25 amWashington, D.C. Dulles Intl
7h 18m
1 stop
ONT11:43 amOntario
Frontier![Frontier]()
May 23![Frontier]()
May 31
ONT12:59 amOntario
13h 00m
1 stop
DCA4:59 pmWashington, D.C. Reagan-National
DCA6:00 pmWashington, D.C. Reagan-National
18h 12m
1 stop
ONT9:12 amOntario
United Airlines flights from Ontario to District of Columbia
Our best United Airlines deals on Ontario to District of Columbia flight tickets
United Airlines![United Airlines]()
Jun 10![United Airlines]()
Jun 16
ONT6:00 amOntario
9h 55m
1 stop
DCA6:55 pmWashington, D.C. Reagan-National
DCA6:00 pmWashington, D.C. Reagan-National
7h 26m
1 stop
ONT10:26 pmOntario
United Airlines![United Airlines]()
May 7![United Airlines]()
May 14
ONT1:20 pmOntario
6h 52m
1 stop
IAD11:12 pmWashington, D.C. Dulles Intl
IAD6:30 amWashington, D.C. Dulles Intl
8h 54m
1 stop
ONT12:24 pmOntario
See travel insights to District of Columbia from
How to get the cheapest flight ticket from Ontario to District of Columbia
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
Prices
Airlines
What is the cheapest month to fly to District of Columbia?
In general, August is the cheapest month to fly from Ontario to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $279. If you don’t want to visit District of Columbia in August, then you should wait until April to fly from Ontario, when ticket prices are also cheap, with an average price of $292.
What is the cheapest day to depart on your flight to District of Columbia?
The cheapest day to depart on your flight to District of Columbia is on a Wednesday when prices can be found for as low as $314. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Ontario because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $492.
What is the cheapest time of day to depart on your flight to District of Columbia?
Flying to District of Columbia from Ontario in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $288 when looking at flights departing in the afternoon. Flights to District of Columbia are more costly at noon, with an average ticket price of $423. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Ontario to District of Columbia flight route?
Fly from Ontario to Baltimore/Washington for the best Ontario - District of Columbia flight prices
How far in advance should I book a flight to District of Columbia?
You are more likely to see cheaper flights to District of Columbia from Ontario when booking 22 weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $454 when searching 22 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from Ontario for as low as $289 on momondo.
What cabin class options are available on Ontario to District of Columbia flights?
There are 1 cabin classes available to choose from on Ontario to District of Columbia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Ontario to District of Columbia?
Frontier, Alaska Airlines, and Hawaiian Airlines are the most popular carriers operating from Ontario to District of Columbia
What airlines fly to District of Columbia?
United Airlines, American Airlines and Spirit Airlines are the top three most popular airlines that fly to District of Columbia from Ontario according to our data. United Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 9 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.
Cheap Ontario to District of Columbia flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Ontario to District of Columbia
Best Price Found | $94 |
|---|---|
Fastest flight time | 6h 29m |
Direct flights | None |
Airports in District of Columbia | 2 airports |
When did momondo last update prices for flights from Ontario Airport to District of Columbia?
Prices for flights from Ontario Airport to District of Columbia refresh daily.
How many operators does momondo search for flights from Ontario Airport to District of Columbia?
As of April 2025, there are 5 operators available to choose from for flights from Ontario Airport to District of Columbia.
How old do you have to be to fly from Ontario Airport to District of Columbia?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to District of Columbia.
What documentation or ID do you need to fly to District of Columbia?
The travel and health documents required for your trip to District of Columbia can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at District of Columbia. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from Ontario to District of Columbia
Compare and see reviews for airlines that fly from Ontario to District of Columbia with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $121 | Free Cancellation | Rating 6.3 7,962 reviews | |||
| PriceFrom $148 | Free Cancellation | Rating 5.9 3,287 reviews | |||
| PriceFrom $256 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom $286 | Free Cancellation | Rating 8.0 7,934 reviews | |||
| PriceFrom $286 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $326 | Free Cancellation | Rating 8.0 4,294 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Ontario to District of Columbia?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to District of Columbia. momondo saves you time and could save you money on your trip.
Can I find flights from Ontario to District of Columbia with flexible booking policies on momondo?
Yes. All flights to District of Columbia from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Ontario to District of Columbia?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to District of Columbia from Ontario.
I’m not ready to book a flight from Ontario to District of Columbia right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to District of Columbia from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.
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