Cheap flights from Ottawa to the United States from $142

In general, June is the cheapest month to fly from Ottawa to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $236. If you aren’t able to travel during the month of June, then book flights to United States from Ottawa during April instead. Flights to United States in April, while not as cheap as those in June, still average around $243.

According to our data, Friday is the cheapest day to fly to United States from Ottawa. The lowest ticket price found for a Friday departure recently was $302. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $479. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

The cheapest time of day to fly to United States is in the evening when flights can be purchased for as low as $196. Try not to purchase tickets at noon because they tend to be around $665. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Ottawa to Newark for the best Ottawa - United States flight prices

There are 4 cabin classes available to choose from on Ottawa to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 54% on your flight if you consider stops on a Ottawa to United States flight.

United Airlines, Porter Airlines, and Air Canada are the most popular carriers operating from Ottawa to United States

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to United States from Ottawa according to our data. Air Canada is the first choice among our users, with 64% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 7 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

Historically, on average around 24% of flights between Ottawa and United States have experienced a delay on any given week. The average delay length over the past 12 months has been 137 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 18% of their flights experiencing any sort of delay.

The number of flights available between Ottawa and United States is 25 per day as of March 2026. The most frequent departure time is 3:00PM, with 69% of daily flights leaving in the afternoon.

The number of flights available between Ottawa and United States is 180 per week as of March 2026. The most frequent departure day is Fri, with 24% of weekly flights leaving on this day.