Find Flight Deals from United States to Ottawa

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights to Ottawa

(Round-trip)
Depart: Fri Dec 19 2014 Return: Mon Dec 22 2014 Trip spans 4 days
United
United
EWR
4:29p
YOW
6:04p
1h 35m
nonstop
YOW
1:08a
EWR
3:00a
1h 52m
nonstop
Depart: Fri Jan 9 2015 Return: Sun Jan 11 2015 Trip spans 3 days
Porter Airlines
Porter Airlines
IAD
4:15a
YOW
7:31a
3h 16m
1 stop
YOW
8:40a
IAD
2:55p
6h 15m
1 stop
Depart: Wed Feb 11 2015 Return: Wed Feb 18 2015 Trip spans 8 days
American Airlines
American Airlines
RDU
12:59p
YOW
5:10p
4h 11m
1 stop
YOW
2:20a
RDU
6:35p
16h 15m
1 stop
Depart: Mon Jan 12 2015 Return: Tue Jan 13 2015 Trip spans 2 days
American Airlines
American Airlines
BWI
1:50p
YOW
6:02a
16h 12m
1 stop
YOW
6:37a
BWI
11:02a
4h 25m
1 stop
Depart: Wed Mar 4 2015 Return: Thu Mar 5 2015 Trip spans 2 days
Air Canada
Air Canada
BOS
3:25p
YOW
4:16a
12h 51m
1 stop
YOW
7:55a
BOS
11:55a
4h 00m
1 stop
Depart: Sat Feb 14 2015 Return: Mon Feb 16 2015 Trip spans 3 days
WestJet
WestJet
LGA
2:30a
YOW
4:07a
25h 37m
1 stop
YOW
3:15a
LGA
8:56a
5h 41m
1 stop
Depart: Wed Jan 21 2015 Return: Mon Jan 26 2015 Trip spans 6 days
American Airlines
American Airlines
MIA
8:15a
YOW
5:10p
8h 55m
1 stop
YOW
2:20a
MIA
1:22p
11h 02m
1 stop
Depart: Tue Dec 23 2014 Return: Wed Dec 31 2014 Trip spans 9 days
United
United
MCO
9:00a
YOW
1:30p
4h 30m
1 stop
YOW
12:07p
MCO
5:44p
5h 37m
1 stop
Depart: Sat Jan 10 2015 Return: Tue Jan 13 2015 Trip spans 4 days
American Airlines
American Airlines
FLL
1:00a
YOW
6:02a
5h 02m
1 stop
YOW
2:20a
FLL
11:35a
9h 15m
1 stop
Depart: Sun Dec 21 2014 Return: Sun Jan 4 2015 Trip spans 15 days
Delta
Delta
ATL
1:55p
YOW
4:22p
2h 27m
nonstop
YOW
12:15a
ATL
3:21a
3h 06m
nonstop
Depart: Sat Jan 31 2015 Return: Mon Feb 2 2015 Trip spans 3 days
United
United
PIT
5:27a
YOW
8:43a
3h 16m
1 stop
YOW
12:29p
PIT
6:10p
5h 41m
1 stop
Depart: Tue Jun 2 2015 Return: Sat Jun 6 2015 Trip spans 5 days
United
United
TPA
2:05a
YOW
9:23a
7h 18m
1 stop
YOW
11:07a
TPA
5:13p
6h 06m
1 stop
Depart: Wed Feb 4 2015 Return: Tue Feb 10 2015 Trip spans 7 days
Porter Airlines
Porter Airlines
MDW
6:00a
YOW
9:56a
3h 56m
1 stop
YOW
1:15p
MDW
4:50p
3h 35m
1 stop
Depart: Mon Feb 23 2015 Return: Tue Feb 24 2015 Trip spans 2 days
United
United
DTW
1:24p
YOW
5:32p
4h 08m
1 stop
YOW
2:30a
DTW
8:13a
5h 43m
1 stop
Depart: Sat Jun 13 2015 Return: Sun Jun 14 2015 Trip spans 2 days
American Airlines
American Airlines
HVN
8:43a
YOW
3:53p
7h 10m
1 stop
YOW
2:35a
HVN
8:18a
5h 43m
1 stop
Depart: Sun Feb 8 2015 Return: Wed Feb 11 2015 Trip spans 4 days
United
United
IND
9:38a
YOW
1:26p
3h 48m
1 stop
YOW
9:23a
IND
1:51p
4h 28m
1 stop
Depart: Fri Apr 17 2015 Return: Mon Apr 20 2015 Trip spans 4 days
American Airlines
American Airlines
ABE
2:00a
YOW
6:55a
4h 55m
1 stop
YOW
7:30a
ABE
2:23p
6h 53m
1 stop
Depart: Mon Mar 23 2015 Return: Fri Mar 27 2015 Trip spans 5 days
Delta
Delta
DCA
3:00p
YOW
7:24p
4h 24m
1 stop
YOW
12:45p
DCA
5:04p
4h 19m
1 stop
Depart: Fri Mar 27 2015 Return: Sun Mar 29 2015 Trip spans 3 days
Air Canada
Air Canada
MSP
7:15a
YOW
12:16p
5h 01m
1 stop
YOW
6:00a
MSP
12:52p
6h 52m
1 stop
Depart: Fri Mar 6 2015 Return: Sun Mar 8 2015 Trip spans 2 days
United
United
ORD
5:20a
YOW
7:07a
1h 47m
nonstop
YOW
8:27a
ORD
10:40a
2h 13m
nonstop
Change your search
Airports
Origin

Allentown
$385
Detroit
$371
Raleigh
$273
Chicago
only $443
only $348
Fort Lauderdale
$309
Washington
only $271
only $405
Miami
$294
New York City
$291
New Haven
$380
Baltimore
$281
Minneapolis
$408
Atlanta
$342
Orlando
$296
Newark
$235
Tampa
$345
Boston
$285
Indianapolis
$381
Pittsburgh
$345
Destination

Ottawa
$235