Find cheap flights to Ontario from $83
138,593+ reviews on
Over 10 million explorers make Kiwi.com a trusted choice worldwide.
Kiwi.com compares airlines and agencies to reveal more options and savings.
We solve problems on the fly. Get instant chat support anytime, in any language.
Find deals from Washington, D.C. to Ontario
Find one-way and return tickets at the lowest prices, whether last-minute or planned in advance.
Find deals from Washington, D.C. to Ontario
Find one-way and return tickets at the lowest prices, whether last-minute or planned in advance.
Cheapest time to fly from Washington, D.C. to Ontario
Flexible with dates? We find the best prices for the week around your selected date. Prices may vary after you search.
One-way
| Thu, Jan 1 - Wed, Jan 7 | $261 |
| Thu, Jan 8 - Thu, Jan 15 | $158 |
| Fri, Jan 16 - Fri, Jan 23 | $122 |
| Sat, Jan 24 - Sat, Jan 31 | $81 |
| Sun, Feb 1 - Sat, Feb 7 | $79 |
| Sun, Feb 8 - Sun, Feb 15 | $84 |
| Mon, Feb 16 - Mon, Feb 23 | $93 |
| Tue, Feb 24 - Sat, Feb 28 | $95 |
| Sun, Mar 1 - Sat, Mar 7 | $91 |
| Sun, Mar 8 - Sun, Mar 15 | $98 |
| Mon, Mar 16 - Mon, Mar 23 | $107 |
| Tue, Mar 24 - Tue, Mar 31 | $99 |
Round-trip
| Thu, Jan 1 - Wed, Jan 7 | $314 |
| Thu, Jan 8 - Thu, Jan 15 | $166 |
| Fri, Jan 16 - Fri, Jan 23 | $79 |
| Sat, Jan 24 - Sat, Jan 31 | $65 |
| Sun, Feb 1 - Sat, Feb 7 | $65 |
| Sun, Feb 8 - Sun, Feb 15 | $69 |
| Mon, Feb 16 - Mon, Feb 23 | $68 |
| Tue, Feb 24 - Sat, Feb 28 | $68 |
| Sun, Mar 1 - Sat, Mar 7 | $70 |
| Sun, Mar 8 - Sun, Mar 15 | $76 |
| Mon, Mar 16 - Mon, Mar 23 | $83 |
| Tue, Mar 24 - Tue, Mar 31 | $90 |
Weather in Ontario
Average Weather
| Month | Average monthly max temperature | Average monthly min temperature |
| January | 18°C | 7°C |
| February | 18°C | 7°C |
| March | 19°C | 8°C |
| April | 23°C | 10°C |
| May | 25°C | 12°C |
| June | 29°C | 16°C |
| July | 32°C | 19°C |
| August | 33°C | 20°C |
| September | 31°C | 18°C |
| October | 27°C | 14°C |
| November | 22°C | 10°C |
| December | 17°C | 7°C |
