Cheap flights from Washington to Ontario
✈️ Fares in November 2026 start from €133 — found by real travellers in the last 48 hours.
Compare all Washington → Ontario flights
Cheapest day to fly in November 2026
| Date | From | Stops | |
|---|---|---|---|
| Tue 3 Nov | €145 | 1 stop | Book → |
| Sat 7 Nov | €133 | 1 stop | Book → |
Popular flights from Washington
Flights to Ontario from other cities
Frequently asked questions
How much is a flight from Washington to Ontario?
Cached market fares for November 2026 start from €133 one-way. Prices are found by real travellers in the last 48 hours and confirmed at checkout.
Which airlines fly from Washington to Ontario?
Recent fares on this route are offered by F9 and others. ScanFlyGo compares 1,200+ airlines and agencies.
What is the cheapest day to fly from Washington to Ontario?
ScanFlyGo shows the cheapest fare for each day of November 2026 — check the price table above to pick the cheapest date, then book directly with the provider.
Is Washington to Ontario a direct flight?
Both direct and connecting options may be available. Use the ScanFlyGo search to filter by stops, airline and time.
Can I track my Washington to Ontario flight live?
Yes. ScanFlyGo has a built-in live flight tracker with a real-time map, so you can follow your aircraft on the day by flight number.
Does ScanFlyGo charge booking or service fees?
No. ScanFlyGo is a free flight metasearch — we compare fares and send you to the airline or agency to book. The price is confirmed at their checkout with no extra fee from us.
About Washington to Ontario flights
ScanFlyGo compares Washington (Ronald Reagan National Airport, DCA) to Ontario (Ontario International Airport, ONT) fares across 1,200+ airlines and agencies via the Aviasales network. The cheapest fare found for November 2026 is €133. Prices shown are the lowest cached market fares; the final price is always confirmed at the partner's checkout. You can also search the return route Ontario → Washington, or use the full live search for exact dates, stops, airline filters and a live map to track your flight on the day.
Plan the rest of your trip to Ontario
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