# Seattle (SEA) to Philadelphia (PHL) economy award flights

Source: https://miles.zone/routes/sea-phl
Data updated: 2026-10-20T19:35:20.832Z
Cash amounts are in US dollars.

Fewest points: 12,500 Atmos points plus $6 on Alaska Airlines through Atmos Rewards, departing 2026-11-06.

## Every program and airline that can book it, next 60 days

| Airline | Program | Points | Cash on top | Routing | Departs | Checked |
| --- | --- | --- | --- | --- | --- | --- |
| Alaska Airlines | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 12,500 Atmos points | $6 | Nonstop | 2026-11-06 | 20 Oct 2026, 19:35 UTC |
| American Airlines | [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 17,500 Atmos points | $26 | Nonstop | 2026-11-01 | 20 Oct 2026, 19:35 UTC |

## Route facts

Over the next 60 days we hold economy seats from Seattle to Philadelphia on 40 of the 40 departure days we have checked so far (20 days are not checked yet), through 1 program. These figures are counted from the seats stored for those dates, not from a price history; the typical day is the median of each day's cheapest seat.

| Program | Days with space | Lowest | Typical day | Cash on top |
| --- | --- | --- | --- | --- |
| [Atmos Rewards](https://miles.zone/programs/atmos-rewards) | 40 of 40 checked | 12,500 Atmos points | 17,500 Atmos points | $6 to $31 |

Nonstop seats on Alaska Airlines and American Airlines.

## How to book it

1. [Atmos Rewards](https://miles.zone/programs/atmos-rewards) books on alaskaair.com: sign in there, search SEA to PHL in economy on a date with space, and pay in Atmos points with the cash on top (from $6).

MilesZone finds the seat; it does not book it or take payment.

## More routes from Seattle

- [Paris (CDG)](https://miles.zone/routes/sea-cdg)
- [Dublin (DUB)](https://miles.zone/routes/sea-dub)
- [Edinburgh (EDI)](https://miles.zone/routes/sea-edi)
- [Frankfurt (FRA)](https://miles.zone/routes/sea-fra)
- [London (LHR)](https://miles.zone/routes/sea-lhr)
- [Manchester (MAN)](https://miles.zone/routes/sea-man)
- [Munich (MUC)](https://miles.zone/routes/sea-muc)
- [Amsterdam (AMS)](https://miles.zone/routes/sea-ams)
- [Barcelona (BCN)](https://miles.zone/routes/sea-bcn)
- [Rome (FCO)](https://miles.zone/routes/sea-fco)
- [Madrid (MAD)](https://miles.zone/routes/sea-mad)
- [Doha (DOH)](https://miles.zone/routes/sea-doh)

## More routes to Philadelphia

- [London (LHR)](https://miles.zone/routes/lhr-phl)
- [London (LGW)](https://miles.zone/routes/lgw-phl)
- [Asheville (AVL)](https://miles.zone/routes/avl-phl)
- [Hartford (BDL)](https://miles.zone/routes/bdl-phl)
- [Nashville (BNA)](https://miles.zone/routes/bna-phl)
- [Cleveland (CLE)](https://miles.zone/routes/cle-phl)
- [Charlotte (CLT)](https://miles.zone/routes/clt-phl)
- [Cincinnati (CVG)](https://miles.zone/routes/cvg-phl)
- [Washington (DCA)](https://miles.zone/routes/dca-phl)
- [Detroit (DTW)](https://miles.zone/routes/dtw-phl)
- [Greenville (GSP)](https://miles.zone/routes/gsp-phl)
- [Milwaukee (MKE)](https://miles.zone/routes/mke-phl)