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Cheap Flights from Ontario International to Washington Ronald Reagan

Compare Ontario International to Washington Ronald Reagan flight deals

Find the cheapest month or even day of the year to fly to Washington Ronald Reagan

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Flight deals from Ontario International to Washington Ronald Reagan

Looking for a cheap last-minute deal or the best return flight from Ontario International Airport to Washington Ronald Reagan Airport? If you want to travel next month, return fares start from Rs64,433. Find the lowest prices on one-way and return tickets right here.
Washington D.C..Rs32,217 per passenger.Departing Sat, 3 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Sat, 3 Oct, arriving in Washington Ronald Reagan.Price includes taxes and charges.From Rs32,217, select.
Washington D.C..Rs32,233 per passenger.Departing Thu, 5 Nov.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Thu, 5 Nov, arriving in Washington Ronald Reagan.Price includes taxes and charges.From Rs32,233, select.
Washington D.C..Rs32,233 per passenger.Departing Tue, 15 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Tue, 15 Sep, arriving in Washington Ronald Reagan.Price includes taxes and charges.From Rs32,233, select.
Washington D.C..Rs32,294 per passenger.Departing Sat, 29 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Ontario International on Sat, 29 Aug, arriving in Washington Ronald Reagan.Price includes taxes and charges.From Rs32,294, select.
Washington D.C..Rs48,688 per passenger.Departing Thu, 10 Dec.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Thu, 10 Dec, arriving in Washington Ronald Reagan.Price includes taxes and charges.From Rs48,688, select.
Washington D.C..Rs48,688 per passenger.Departing Thu, 14 Jan.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Thu, 14 Jan, arriving in Washington Ronald Reagan.Price includes taxes and charges.From Rs48,688, select.
Washington D.C..Rs48,688 per passenger.Departing Tue, 23 Feb.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 23 Feb, arriving in Washington Ronald Reagan.Price includes taxes and charges.From Rs48,688, select.
Washington D.C..Rs55,610 per passenger.Departing Tue, 2 Mar.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Ontario International on Tue, 2 Mar, arriving in Washington Ronald Reagan.Price includes taxes and charges.From Rs55,610, select.
Washington D.C..Rs88,665 per passenger.Departing Mon, 14 Jun.One-way flight with Delta.Outbound indirect flight with Delta, departs from Ontario International on Mon, 14 Jun, arriving in Washington Ronald Reagan.Price includes taxes and charges.From Rs88,665, select.

Find the cheapest month to fly from Ontario International to Washington Ronald Reagan

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Ontario International to Washington Ronald Reagan flights are currently cheapest in October.
Aug
from Rs32,294
Sep
from Rs32,233
Oct
from Rs32,217
Nov
from Rs32,233
Dec
from Rs48,688
Jan
from Rs48,688
Feb
from Rs48,688
Mar
from Rs55,610
Apr
Find prices
May
Find prices
Jun
from Rs88,665
Jul
Find prices

Ontario International to Washington Ronald Reagan: Alternative routes

Compare routes from Ontario International to Washington D.C. below. You may find an airport to fly into that's cheaper, faster, or easier than Washington Ronald Reagan.

Washington Ronald Reagan

5km from central Washington D.C.
ClosestCheapest
from Rs32,217
Search flights

Washington Dulles

37km from central Washington D.C.
from Rs34,515
Search flights

Baltimore Washington International

44km from central Washington D.C.
from Rs32,316
Search flights

Ontario to Washington D.C.: Flight information

The things to know before you go.
Cheapest flight foundRs32,217
Cheapest month to flyOctober

Finding cheap flights from Ontario International to Washington Ronald Reagan: Frequently asked questions

The best price we found for a return flight from Ontario International to Washington Ronald Reagan is Rs64,433. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Ontario International to Washington Ronald Reagan. But we found flights with one or more stops from Rs64,433.
As of August 2026, there are no flights flying from Ontario International to Washington Ronald Reagan.
The cheapest month to fly from Ontario International to Washington Ronald Reagan is usually October.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Ontario International Airport to Washington Ronald Reagan Airport on Thursday, 22 October 2026.
No airlines currently offer direct flights between Ontario International Airport and Washington Ronald Reagan Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Washington Ronald Reagan but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Washington D.C. is around 40 days in advance, so don’t leave your flight to the last minute.

Currently, Frontier Airlines offers the cheapest flight tickets to Washington Ronald Reagan.

Travelling from Ontario International Airport (ONT) to Washington Ronald Reagan Airport (DCA): what you need to know

  • Washington DC's timezone is UTC-5, which makes Washington DC three hours ahead of Ontario.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are tried-and-true travel tips. Get to the airport on time to board your ONT to DCA flight.

  • You can expect longer queues in popular months such as July. Arriving up to four hours ahead of an international flight and two hours for domestic departures will give you ample time for security and boarding.

  • We make it simple to book a flight with a stopover. To see your options for tickets from Ontario International Airport to Washington Ronald Reagan Airport, uncheck 'Direct flights only.' Then, choose a flight with a stop long enough to explore the city of your choice. Some great stopovers between ONT and DCA include:

    • Phoenix Sky Harbour Airport

    • Harry Reid International Airport

    • Nashville Airport

Handy information about Ontario International Airport (ONT)

  • ONT's address is 2900 E. Airport Drive.

  • Ontario International Airport maintains a strong on-time performance, reducing your chances of a delayed flight. Departures from ONT land on schedule 83% of the time.

  • Central Ontario to Ontario International Airport is around 10 kilometres. Depending on traffic, it'll take you about 15 minutes to get there if you're driving, catching a taxi or ride-sharing.

  • Planning to take public transport? Expect a journey time of around 45 minutes.

  • Get your journey off to a stress-free start by staying near ONT. Whether you're taking an early flight from Ontario International Airport to Washington Ronald Reagan Airport or just don't want to be rushed, these hotels are the answer:

Arriving at Washington Ronald Reagan Airport (DCA)

Getting from Washington Ronald Reagan Airport (DCA) to central Washington DC

  • DCA is located at 1 Aviation Circle.

  • Washington Ronald Reagan Airport is approximately 6 kilometres from central Washington DC. The drive time takes about 10 minutes.

  • Getting there by public transport typically takes 25 minutes.

When to fly to Washington Ronald Reagan Airport (DCA)

  • The quietest month for a flight from Ontario International Airport to Washington Ronald Reagan Airport is March, while August is the most popular. Pick the ideal time to go to Washington DC based on whether you prefer a more fast-paced or easygoing experience.

  • Book your flight from Ontario International Airport to Washington Ronald Reagan Airport for July if you want to go to Washington DC during its warmest month. Expect temperatures of between 19ºC and 33ºC.

  • January sees average temperatures of between -6ºC and 10ºC. Look for cheap tickets from ONT to DCA sometime around then if you like travelling in cooler conditions.

Explore more of the United States

  • New York is just one of the many cities in the United States waiting to be explored once you've taken in the sights of Washington DC. Around 322 kilometres away to the north-east, popular attractions include Central Park, Statue of Liberty and Metropolitan Museum of Art.

  • Philadelphia is another favourite destination in the United States and is around 193 kilometres north-east of Washington DC. No journey is complete without experiencing Independence Hall, Liberty Bell and Philadelphia Museum of Art.

Plan the rest of your trip from Ontario to Washington D.C.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.