Cheap flights from Dulles to Porto from $0
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Discover deals on Dulles to Porto flights
Typical range $0–$0•Cheapest found $0
Checking latest prices...Find cheap flights from Dulles to Porto
Best
1 stop
8 Feb
DEP
22:30
IAD
1×
17:00
OPO
13h 30m
8 Feb
DEPARTURE
22:30 - 17:00
13h 30m
IAD
1 stop
OPO
1 stop
8 Feb
DEP
22:30
IAD
1×
15:20
OPO
11h 50m
8 Feb
DEPARTURE
22:30 - 15:20
11h 50m
IAD
1 stop
OPO
American Airlines flights from Dulles to Porto
Our best American Airlines deals on Dulles to Porto tickets
Best
1 stop
8 Feb
DEP
18:00
IAD
1×
11:45
OPO
12h 45m
8 Feb
DEPARTURE
18:00 - 11:45
12h 45m
IAD
1 stop
OPO
1 stop
8 Feb
DEP
18:00
IAD
1×
16:00
OPO
17h 0m
8 Feb
DEPARTURE
18:00 - 16:00
17h 0m
IAD
1 stop
OPO
TAP Air Portugal flights from Dulles to Porto
Our best TAP Air Portugal deals on Dulles to Porto tickets
Best
1 stop
8 Feb
DEP
22:30
IAD
1×
17:00
OPO
13h 30m
8 Feb
DEPARTURE
22:30 - 17:00
13h 30m
IAD
1 stop
OPO
1 stop
8 Feb
DEP
22:30
IAD
1×
15:20
OPO
11h 50m
8 Feb
DEPARTURE
22:30 - 15:20
11h 50m
IAD
1 stop
OPO
Iberia flights from Dulles to Porto
Our best Iberia deals on Dulles to Porto tickets
Best
1 stop
8 Feb
DEP
18:00
IAD
1×
11:45
OPO
12h 45m
8 Feb
DEPARTURE
18:00 - 11:45
12h 45m
IAD
1 stop
OPO
1 stop
8 Feb
DEP
18:00
IAD
1×
16:00
OPO
17h 0m
8 Feb
DEPARTURE
18:00 - 16:00
17h 0m
IAD
1 stop
OPO
British Airways flights from Dulles to Porto
Our best British Airways deals on Dulles to Porto tickets
Best
2 stops
8 Feb
DEP
13:08
IAD
2×
07:40
OPO
13h 32m
8 Feb
DEPARTURE
13:08 - 07:40
13h 32m
IAD
2 stops
OPO
2 stops
8 Feb
DEP
11:34
IAD
2×
07:40
OPO
15h 6m
8 Feb
DEPARTURE
11:34 - 07:40
15h 6m
IAD
2 stops
OPO
What's the cheapest day of the week to fly from Dulles to Porto?
If your flying dates are flexible, you should consider flying to Porto on a Tue, as we generally find the cheapest rates on that day. On the other hand, Thu is the most expensive day to fly.
What is the cheapest month to fly from Dulles to Porto?
The cheapest month for flights from Dulles to Porto is Sep, where tickets cost $551 on average. The most expensive months are Jul.
JanFebMarAprMayJunJulAugSepOctNovDec
$795$673$551
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Everything you should know
Cheapest one-way flight
$606
Typical prices: $606–$906
When to book
6 weeks
in advance to save around 35%
Good to know
💰
Save money
Compare prices across airlines to find the best deal. Prices can vary significantly.
📅
Be flexible
Flying midweek or in off-peak seasons can save you up to 30% on airfare.
⏰
Book early
Booking 6+ weeks in advance typically offers the best prices.
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Frequently asked questions
The cheapest flight from Dulles to Porto currently costs AUD $606. Prices typically range from $606 to $906. Prices change frequently, so we recommend booking early and being flexible with your travel dates.