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Flights between Dulles (IAD) and Ottawa (YOW)

Washington Dulles International Airport, United States ↔ Ottawa Macdonald-Cartier International Airport, Canada

A direct route between Dulles and Ottawa appears in the OpenFlights route network.

Airlines currently operating this route:

Observed from recent schedules · as of 22 Jul 2026 — sampled, not a live timetable; confirm with the airline.

United Airlines (UA)
Distance
724 km
450 miles
Est. flight time
1h 24m
great-circle estimate
Time difference
None
varies with DST
View this route on the live map →Search fares on Skyscanner ↗

Climate

Typical monthly temperatures in United States

Jan
4°
9/-1
70mm
Feb
6°
11/1
60mm
Mar
11°
16/6
75mm
Apr
17°
22/12
80mm
May
23°
28/18
95mm
Jun
28°
33/23
100mm
Jul
30°
35/25
95mm
Aug
29°
34/24
90mm
Sep
25°
30/20
80mm
Oct
18°
23/13
70mm
Nov
11°
16/6
70mm
Dec
5°
10/0
75mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Typical monthly temperatures in Canada

Jan
-7°
-2/-12
50mm
Feb
-5°
0/-10
40mm
Mar
0°
5/-5
50mm
Apr
9°
14/4
60mm
May
17°
22/12
70mm
Jun
22°
27/17
85mm
Jul
25°
30/20
90mm
Aug
24°
29/19
85mm
Sep
19°
24/14
70mm
Oct
12°
17/7
65mm
Nov
4°
9/-1
65mm
Dec
-3°
2/-8
60mm

Mean °C (high/low below), avg. rainfall mm · country-level monthly normals, not airport-specific.

Travel advisories

United States: Normal precautions (UK FCDO) ↗Canada: Normal precautions (UK FCDO) ↗

Common questions

How far is Dulles from Ottawa?

Dulles (IAD) and Ottawa (YOW) are around 724 km (450 miles) apart — an estimated 1h 24m by air. Distances and flight times are great-circle estimates.

Which airlines have operated the IAD–YOW route?

Airlines recorded operating this route in the OpenFlights network include United Airlines. This reflects historical scheduled service and may be out of date.

What is the time difference between Dulles and Ottawa?

Both airports keep the same time — no time difference.

When is it warmest in Canada?

Across Canada, the warmest month on average is July, with mean temperatures around 25°C. These are country-level monthly climate normals, not airport-specific.

Are there travel advisories for United States and Canada?

The UK FCDO currently rates United States as Normal precautions; The UK FCDO rates Canada as Normal precautions. Check the official sources before you travel.

Distances and flight times are great-circle estimates, not booked block times.