Cheap flights from Baltimore to Lisbon from $427 BWI → LIS
Baltimore/Wash International Thurgood Marshall Airport (BWI) → Lisbon Portela Airport (LIS)
The cheapest return found recently is $973 with Icelandair, 1 Sept 2027 – 10 Sept 2027, found 2 days ago. The cheapest one-way found recently is $427 with Frontier Airlines, 23 Jan 2027, found 7 days ago.
- Cheapest one-way found recently
- $427, found 7 days ago
- Cheapest return found recently
- $973, 1 Sept 2027 to 10 Sept 2027
- Usual return price
- $1,289 to $1,343
- Cheapest month to fly
- September 2027, return fares from $973 found in the last 7 days
Return
The cheapest return fare on each of 6 departure dates is usually $1,289 to $1,343.
Cheapest return found recently
$973
1 Sept 2027 – 10 Sept 2027 · Icelandair
Baltimore/Wash International Thurgood Marshall Airport (BWI) → Lisbon Portela Airport (LIS)
Leaves 8:30 p.m. · Return leaves 7:40 a.m. · 38 h 10 min of travel, both ways together
out 2 stops, back 3 stops
found 2 days ago
Cheapest nonstop return
None seen yet.
Found recently, and the cheapest we hold
$973 1 Sept 2027 – 10 Sept 2027found 2 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $718 to $1,110.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 6 departure dates from 24 Dec to 1 Sept 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 9-night return fares leaving within 3 days of 1 Sept 2027 to compare.
Every date we hold
6 fares on 6 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 24 Dec – 31 Dec | $1,281 | British Airways | Baltimore/Wash International Thurgood Marshall Airport (BWI) → Lisbon Portela Airport (LIS) | out 2 stops, back 2 stops | found 5 days ago | See prices for these dates |
| 21 Jun 2027 – 29 Jun 2027 | $1,345 | British Airways | Baltimore/Wash International Thurgood Marshall Airport (BWI) → Lisbon Portela Airport (LIS) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 22 Jun 2027 – 30 Jun 2027 | $1,345 | American Airlines | Baltimore/Wash International Thurgood Marshall Airport (BWI) → Lisbon Portela Airport (LIS) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 23 Jun 2027 – 30 Jun 2027 | $1,337 | British Airways | Baltimore/Wash International Thurgood Marshall Airport (BWI) → Lisbon Portela Airport (LIS) | out 1 stop, back 1 stop | found 2 days ago | See prices for these dates |
| 24 Jun 2027 – 1 Jul 2027 | $1,314 | Icelandair | Baltimore/Wash International Thurgood Marshall Airport (BWI) → Lisbon Portela Airport (LIS) | out 2 stops, back 2 stops | found 6 days ago | See prices for these dates |
| 1 Sept 2027 – 10 Sept 2027 | $973 | Icelandair | Baltimore/Wash International Thurgood Marshall Airport (BWI) → Lisbon Portela Airport (LIS) | out 2 stops, back 3 stops | found 2 days ago | See prices for these dates |
Which month looks cheapest?
September 2027 is the cheapest month — from $973.
Airlines on the cheapest dates: British Airways, Icelandair, American Airlines.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$427
23 Jan 2027 · Frontier Airlines
Baltimore/Wash International Thurgood Marshall Airport (BWI) → Lisbon Portela Airport (LIS)
Leaves 7:51 a.m. · 42 h 54 min trip
3 stops
found 7 days ago
Cheapest nonstop one-way
None seen yet.
Found recently, and the cheapest we hold
$427 23 Jan 2027found 7 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 13 days, 7 Oct to 11 Nov, the cheapest one-way we saw each day was $427 to $712.
At $427, the cheapest one-way found recently is at the low end of that range.
13 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 1 departure date and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 23 Jan 2027 to compare.
Every date we hold
1 fares on 1 departure dates
See every date as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 23 Jan 2027 | $427 | Frontier Airlines | Baltimore/Wash International Thurgood Marshall Airport (BWI) → Lisbon Portela Airport (LIS) | 3 stops | found 7 days ago | Open this trip |
Airlines on the cheapest dates: Frontier Airlines.
Premium cabin fares from Baltimore to Lisbon
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 1 Sept 2027 – 10 Sept 2027 in another cabin: Premium economy · Business · First
Today's prices for 23 Jan 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Baltimore to Lisbon?
Return
Fares 14 to 29 days before departure were typically 32% lower than 0 to 6 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $1,239 | $1,043 | +47% | 13 |
| 7–13 days | $890 | $836 | +5% | 19 |
| 14–29 days | $845 | $718 | Cheapest seen | 29 |
| 30–59 days | $1,222 | $936 | +45% | 25 |
| 60–89 days | $853 | $719 | +1% | 20 |
| 180+ days | $1,265 | $973 | +50% | 49 |
One-way
Not enough history yet: in 13 days of one-way prices, 7 Oct to 11 Nov, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Washington → Lisbon
57 km from Baltimore
$911
$62 less than flying from Baltimore
1 Sept 2027 – 10 Sept 2027 · IAD → LIS · out 1 stop, back 1 stop
found 2 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
One-way
Washington → Lisbon
57 km from Baltimore
$428
$1 more than flying from Baltimore
23 Jan 2027 · IAD → LIS · 2 stops
found 7 days ago
Cheapest recent price on each route — one way, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 1 Sept 2027 – 10 Sept 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Baltimore to Lisbon?
The cheapest return found recently is $973 with Icelandair, 1 Sept 2027 to 10 Sept 2027, found 2 days ago. The cheapest return fare on each of 6 departure dates is usually $1,289 to $1,343.
How much is a one-way flight from Baltimore to Lisbon?
The cheapest one-way found recently is $427 with Frontier Airlines, 23 Jan 2027, found 7 days ago.
What is the cheapest month to fly from Baltimore to Lisbon?
September 2027 is the cheapest month for a return, from $973, 1 Sept 2027 to 10 Sept 2027, found 2 days ago.
How far ahead should I book a flight from Baltimore to Lisbon?
In 49 days of prices between 24 Sept and 11 Nov, return fares 14 to 29 days before departure were typically 32% lower than 0 to 6 days before departure.
How long is the flight from Baltimore to Lisbon?
The cheapest one-way found recently, with Frontier Airlines on 23 Jan 2027, takes 42 h 54 min with 3 stops.
Which airlines have the cheapest flights from Baltimore to Lisbon?
Between 24 Dec and 1 Sept 2027, British Airways has the cheapest return on 3 of the 6 departure dates we hold, Icelandair on 2 and American Airlines on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work