Find Deals on Flights from United States to Portugal

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

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

Book cheap flights to

(Round-trip)
Depart: Tue Mar 1 2016 Return: Fri Mar 4 2016 Trip spans 4 days
SATA International
SATA International
BOS
PDL
4h 45m
nonstop
PDL
BOS
5h 45m
nonstop
Depart: Sat Feb 20 2016 Return: Sat Feb 27 2016 Trip spans 8 days
Turkish Airlines
Turkish Airlines
BOS
LIS
30h 30m
1 stop
LIS
BOS
35h 55m
1 stop
Depart: Tue Mar 15 2016 Return: Tue Apr 5 2016 Trip spans 22 days
Turkish Airlines
Turkish Airlines
JFK
LIS
38h 30m
1 stop
LIS
JFK
39h 45m
1 stop
Depart: Sun Mar 13 2016 Return: Sat Apr 2 2016 Trip spans 20 days
Turkish Airlines
Turkish Airlines
BOS
OPO
34h 30m
1 stop
OPO
BOS
31h 40m
1 stop
Depart: Sat Feb 27 2016 Return: Wed Mar 2 2016 Trip spans 5 days
Turkish Airlines
Turkish Airlines
IAD
LIS
30h 15m
1 stop
LIS
IAD
31h 20m
1 stop
Depart: Tue Feb 16 2016 Return: Sun Feb 28 2016 Trip spans 13 days
Turkish Airlines
Turkish Airlines
LAX
LIS
31h 40m
1 stop
LIS
LAX
32h 30m
1 stop
Depart: Sun Apr 24 2016 Return: Wed May 4 2016 Trip spans 11 days
Aer Lingus
Aer Lingus
JFK
FAO
14h 15m
1 stop
FAO
JFK
26h 45m
1 stop
Depart: Mon Feb 29 2016 Return: Tue Mar 22 2016 Trip spans 22 days
Turkish Airlines
Turkish Airlines
SFO
LIS
37h 05m
1 stop
LIS
SFO
36h 45m
1 stop
Depart: Wed Feb 24 2016 Return: Sat Mar 5 2016 Trip spans 11 days
Turkish Airlines
Turkish Airlines
MIA
LIS
36h 45m
1 stop
LIS
MIA
37h 05m
1 stop
Depart: Tue Jun 21 2016 Return: Wed Jun 29 2016 Trip spans 9 days
Delta
Delta
PHL
LIS
14h 30m
2 stops
LIS
PHL
19h 01m
2 stops
Depart: Wed Jun 22 2016 Return: Tue Jul 5 2016 Trip spans 14 days
Turkish Airlines
Turkish Airlines
ATL
LIS
30h 45m
1 stop
LIS
ATL
36h 35m
1 stop
Depart: Sun Feb 21 2016 Return: Mon Mar 7 2016 Trip spans 16 days
Major Airline
Major Airline
EWR
LIS
6h 50m
nonstop
LIS
EWR
8h 35m
nonstop
Depart: Mon Mar 14 2016 Return: Thu Apr 7 2016 Trip spans 25 days
TAP Portugal
TAP Portugal
EWR
OPO
6h 50m
nonstop
OPO
EWR
8h 05m
nonstop
Depart: Fri Aug 12 2016 Return: Sun Aug 14 2016 Trip spans 3 days
American Airlines
American Airlines
CLT
LIS
25h 30m
1 stop
LIS
CLT
31h 45m
1 stop
Depart: Sun Apr 3 2016 Return: Sun Apr 10 2016 Trip spans 8 days
Turkish Airlines
Turkish Airlines
ORD
LIS
35h 20m
1 stop
LIS
ORD
36h 30m
1 stop
Depart: Wed May 18 2016 Return: Wed May 25 2016 Trip spans 8 days
Air Canada
Air Canada
LGA
LIS
14h 20m
2 stops
LIS
LGA
20h 25m
2 stops
Depart: Tue Aug 30 2016 Return: Tue Sep 13 2016 Trip spans 15 days
Turkish Airlines
Turkish Airlines
JFK
OPO
17h 55m
1 stop
OPO
JFK
27h 30m
1 stop
Depart: Mon May 23 2016 Return: Sun May 29 2016 Trip spans 7 days
American Airlines
American Airlines
LGA
OPO
15h 30m
2 stops
OPO
LGA
18h 17m
2 stops
Depart: Wed Mar 2 2016 Return: Wed Mar 16 2016 Trip spans 14 days
Iberia
Iberia
DFW
LIS
20h 15m
1 stop
LIS
DFW
14h 30m
1 stop
Depart: Wed Mar 9 2016 Return: Wed Mar 23 2016 Trip spans 14 days
Delta
Delta
DAL
LIS
16h 00m
2 stops
LIS
DAL
32h 27m
2 stops
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We make every attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller
At KAYAK we don’t set prices, so it’s not possible for us to guarantee what other companies are selling.

We aggregate tons of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we don't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find on occasion that certain prices are no longer available.

More questions or if you have a bad price to report to us
Please send us an email and someone from our team will get back to you promptly.

Airports
Origin

San Francisco
$653
New York
only $576
only $821
Charlotte
$791
Atlanta
$746
Chicago
$810
Los Angeles
$650
Newark
$773
Dallas
only $939
only $968
Philadelphia
$711
Washington
$644
Boston
$433
Miami
$654
Destination

Porto
$578
Lisbon
$576
Faro
$650
Ponta Delgada (Açores)
$433