S$256 Cheap Flights from Ontario to Washington

View S$256 flight on Mon, 14 Jul, 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Ronald Reagan Washington National Airport (DCA)

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Cheap Flights from Ontario to Washington (ONT-DCA)

Prices were available within the past 7 days and start at S$256 for one-way flights and S$422 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, 15 Jul - Tue, 26 Aug
ONT
Ontario
DCA
Washington
S$422 Return, found 2 hours ago
S$422
Return
found 2 hours ago
Select Delta flight, departing Tue, 15 Jul from Ontario to Washington, returning Tue, 26 Aug, priced at S$422 found 2 hours ago
Delta
Tue, 15 Jul - Fri, 22 Aug
ONT
Ontario
DCA
Washington
S$423 Return, found 2 hours ago
S$423
Return
found 2 hours ago
Select Delta flight, departing Tue, 15 Jul from Ontario to Washington, returning Fri, 22 Aug, priced at S$423 found 2 hours ago
Delta
Mon, 14 Jul - Mon, 25 Aug
ONT
Ontario
DCA
Washington
S$447 Return, found 2 hours ago
S$447
Return
found 2 hours ago
Select Delta flight, departing Mon, 14 Jul from Ontario to Washington, returning Mon, 25 Aug, priced at S$447 found 2 hours ago
Delta
Mon, 14 Jul - Fri, 22 Aug
ONT
Ontario
DCA
Washington
S$448 Return, found 2 hours ago
S$448
Return
found 2 hours ago
Select Delta flight, departing Mon, 14 Jul from Ontario to Washington, returning Fri, 22 Aug, priced at S$448 found 2 hours ago
Delta
Thu, 17 Jul - Tue, 26 Aug
ONT
Ontario
DCA
Washington
S$486 Return, found 2 hours ago
S$486
Return
found 2 hours ago
Select Delta flight, departing Thu, 17 Jul from Ontario to Washington, returning Tue, 26 Aug, priced at S$486 found 2 hours ago
Delta
Thu, 17 Jul - Fri, 22 Aug
ONT
Ontario
DCA
Washington
S$487 Return, found 2 hours ago
S$487
Return
found 2 hours ago
Select Delta flight, departing Thu, 17 Jul from Ontario to Washington, returning Fri, 22 Aug, priced at S$487 found 2 hours ago
Delta
Mon, 14 Jul - Mon, 25 Aug
ONT
Ontario
DCA
Washington
S$499 Return, found 2 hours ago
S$499
Return
found 2 hours ago
Select Delta flight, departing Mon, 14 Jul from Ontario to Washington, returning Mon, 25 Aug, priced at S$499 found 2 hours ago
American Airlines
Mon, 14 Jul - Mon, 25 Aug
ONT
Ontario
DCA
Washington
S$511 Return, found 2 hours ago
S$511
Return
found 2 hours ago
Select American Airlines flight, departing Mon, 14 Jul from Ontario to Washington, returning Mon, 25 Aug, priced at S$511 found 2 hours ago
Delta
Tue, 15 Jul - Thu, 28 Aug
ONT
Ontario
DCA
Washington
S$521 Return, found 2 hours ago
S$521
Return
found 2 hours ago
Select Delta flight, departing Tue, 15 Jul from Ontario to Washington, returning Thu, 28 Aug, priced at S$521 found 2 hours ago
Delta
Mon, 14 Jul - Thu, 28 Aug
ONT
Ontario
DCA
Washington
S$545 Return, found 2 hours ago
S$545
Return
found 2 hours ago
Select Delta flight, departing Mon, 14 Jul from Ontario to Washington, returning Thu, 28 Aug, priced at S$545 found 2 hours ago
Ontario to Washington route information
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Ronald Reagan Washington National
Return price
S$421
Distance
3614 km
Average flight time
8 hours 2 mins

Perfect flights from Ontario to Washington

Your Journey from Ontario to Washington

Start your unforgettable journey with Expedia. Our broad selection of flights from Ontario to Washington caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Delta, American Airlines, United. Our selection of flights from Los Angeles - Ontario Intl. to Ronald Reagan Washington National caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Ontario to Washington Flights

Experience the joy of finding cheap flights from Los Angeles - Ontario Intl. to Ronald Reagan Washington National that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$256 and roundtrip prices from S$422*.
 

Pre-Flight Essentials

Ensure a smooth journey from Ontario to Washington with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Washington

Picture yourself stepping off the plane in Washington and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Ontario to Washington Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Ontario to Washington.
 

Beyond the Flight – Exploring Washington

With Expedia, your adventure extends beyond the flight. Explore Washington at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Ontario to Washington with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Ontario to Washington with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from ONT to National Airport?
Round-trip tickets from Ontario Airport to DCA start from S$422. This figure is based on fares offered within the last 7 days on Expedia for flights departing within the next year — book today to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from ONT to National Airport?
We get that things come up unexpectedly, so we’ve made it as simple as possible for you to cancel your trip online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Ontario Airport to DCA that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Los Angeles - Ontario Intl. Airport (ONT) to National Airport flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Los Angeles - Ontario Intl. Airport (ONT) to DCA?
It’s around 3,600 kilometres between Ontario and Arlington, so you’ll be in your seat for a while. Keep yourself occupied with things like a magazine or a good old-fashioned book.
Which airlines fly direct from Ontario Airport to DCA?
If you want to travel straight from Ontario Airport to National Airport, you’ll need to book a flight with at least one stop. Unfortunately, there aren’t any airlines that fly directly between these airports.
Are Los Angeles - Ontario Intl. Airport (ONT) to National Airport flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Ontario Airport to National Airport last minute could be your ticket to an awesome deal. However, it could end up costing a good deal more! If you’d prefer not to take any chances, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to a year in advance. If your preferred carrier hasn’t released tickets yet, check back regularly as deals are updated all the time on Expedia.

Explore a world of travel with Expedia

Ontario Airports

Los Angeles

Los Angeles Intl. to Washington
S$352.30

Orange County

John Wayne to Washington
S$382.60
*Available to Expedia members.