2LNR vs seats.aero: seats we have checked, not prices
It depends on what you track. seats.aero is an award-search aggregator across the loyalty programs listed in its own navigation, and on Pro it also runs upgrade finders for Alaska first class, Air Canada eUpgrades, Emirates, United PlusPoints and JetBlue Mint. 2LNR reads award seats too, and adds the two upgrade instruments those finders do not cover: American systemwide space and Delta Global and Regional Upgrade Certificate space. On Alaska U-class first class the two overlap. 2LNR's free plan shows a rolling 14-day window you can refresh on demand; Pro at $175 a year opens the full 331-day horizon with unlimited alerts. seats.aero Pro is $9.99 a month or $99.99 a year, and its free tier covers flights departing in the next two months.
Reviewed .
2LNR vs seats.aero, feature by feature
Short answer: both tools watch award space, and both watch some upgrade space. seats.aero aggregates awards across 24 programs and adds upgrade finders for Alaska, Air Canada, Emirates, United and JetBlue; 2LNR covers award space across more than 20 airlines and adds the two instruments those finders leave out, American systemwide upgrades and Delta Global and Regional Upgrade Certificates, in a standing calendar rather than a search.
Prices, program count, tier windows and the upgrade-tool list below were read on seats.aero itself on August 8, 2026. The Pro alert-filter specifics and the cached-staleness criticism come from the July review coverage linked in Sources and were not re-checked. Tell us if something is out of date.
| Capability | seats.aero (as of August 2026) | 2LNR (as of August 2026) |
|---|---|---|
| Award coverage | Award space aggregated from the 24 airline loyalty programs listed in its own navigation, searchable across programs at once. | Award availability across more than 20 airlines in a calendar matrix, by route and date, the next 14 days free and the full horizon on Pro. |
| Upgrade inventory | Yes, on Pro, for five carriers: Alaska first class (U inventory, nonstops within North America), Air Canada eUpgrades (R inventory), Emirates, United PlusPoints, and JetBlue Move to Mint. No American systemwide or Delta certificate tool appeared in its Tools menu on the date below. | American C-class systemwide space, Delta Global and Regional Upgrade Certificate space, and Alaska U-class first class, per flight and date. Alaska overlaps with seats.aero; American and Delta do not. |
| Data freshness | Aggregated results, which seats.aero says update with fresh airline data as you view them; reviewers' recurring criticism is that a listing can already be gone. Pro adds a live re-check of a specific flight before you transfer points. | Availability is tracked continuously, and any cell inside your window can be refreshed on demand, on Free as well as Pro. |
| Free tier | Search, explore and alerts for flights departing within the next two months, in its own words, with no registration required. | 14-day upgrade matrix for American, Delta and Alaska with on-demand refresh, 3 saved routes, mailbox trip import, loyalty and status tracking. No credit card required. |
| Alerts | Availability alerts on the free tier; Pro adds filters for maximum points price, minimum seat count, nonstop only, maximum fees, and program exclusions. | Unlimited alert rules on Pro across upgrade and award space, delivered by email, SMS, in-app, and push. Free has no alerts. |
| Search horizon | The next two months free; Pro unlocks up to a year of availability on all routes, in its own words. | 14 days on Free; all 331 days on Pro. |
| Price | Pro $9.99/mo or $99.99/yr. Free tier available. | Pro $175/yr or $50/quarter. Free $0. |
The upgrade-finder list, program count, free window, Pro horizon and Pro price were all read on seats.aero itself on August 8, 2026, including the upgrade tools in its Tools menu, which a plain fetch of the page does not show. The Pro alert filters, the Partner API's non-commercial terms and the cached-staleness criticism are as the reviews linked in Sources stated them, accessed July 24, 2026, and were not re-checked.
What seats.aero does well
A comparison is only useful if it is honest about the other tool. Two things seats.aero does well, stated plainly.
Breadth, answered instantly
seats.aero's core trick is coverage. It aggregates award space from the 24 loyalty programs in its own navigation and answers "where can I go on points" across all of them at once, returning results immediately. Alerts are included on the free tier. If you hold transferable points and have no fixed destination yet, that is a different question from the one 2LNR answers, and seats.aero answers it well.
Pro adds live re-checks, upgrade finders and developer access
Pro re-verifies a specific flight live before you transfer points, which is the right guard against acting on an aggregated result. It also adds premium alert filters, up to a year of availability, a Partner API for non-commercial use, and a browser extension that surfaces points pricing alongside Google Flights.
Pro carries genuine upgrade tools too, and it is worth saying plainly because this page used to claim otherwise: finders for Alaska first class, Air Canada eUpgrades, Emirates, United PlusPoints and JetBlue Mint. If Alaska first class is the upgrade you chase, seats.aero looks at the same U-class inventory 2LNR does.
Where 2LNR takes a different approach
The two products answer different questions. These are the three differences that decide which one fits your year.
American and Delta upgrade inventory, which its finders leave out
Award space and upgrade space are separate buckets, and no award search returns either American or Delta upgrade space. An American systemwide upgrade clears against C-class inventory and Delta Global and Regional Upgrade Certificates clear against their own; seats.aero's upgrade finders cover Alaska, Air Canada, Emirates, United and JetBlue, not those two. 2LNR tracks American, Delta and Alaska per flight and date, so you commit a certificate only where space already exists.
The workflow for American is in the step-by-step SWU search guide.
A window you refresh, not a cache you wait on
The recurring criticism of cached aggregation in the reviews linked below is staleness: a result stands until something re-verifies it, and on seats.aero that live re-check is a Pro feature. 2LNR tracks availability continuously and lets you refresh any cell inside your window on demand, on the free plan too. Fourteen days is a small window, but what it shows is current.
Upgrades, awards, and alerts in one calendar
The same calendar carries award availability across more than 20 airlines and upgrade space on American, Delta, and Alaska, with one alert engine over both. The interactive route map is free to browse without an account, and trips import automatically from Gmail or Outlook, so the routes you already fly populate themselves.
Who should use which
Neither tool is a superset of the other. The honest split, by the question you are actually asking.
Use seats.aero when the destination is open
"I have 150,000 transferable points and eight days in October, where can I go in business class?" is a breadth question across many programs at once, and that is what a cached aggregator is built for. If you are shopping partner programs you have never booked before, start there.
Use 2LNR when the route is fixed
"I fly Dallas to London twice a quarter and I hold two systemwide upgrades" is a depth question. You need a standing calendar of the specific routes you fly, upgrade inventory as well as award space, and an alert the moment a date opens. That is the product 2LNR is.
Plenty of frequent flyers run both, and there is nothing wrong with that. The comparison above is here so you can decide what your own routes need. If you are also weighing per-flight availability lookups, the 2LNR vs ExpertFlyer comparison covers that tool.
Frequently asked questions
Does seats.aero show upgrade availability?
How much does seats.aero Pro cost?
Is there a free seats.aero alternative?
Why do cached award results go stale?
Which is better for award search, seats.aero or 2LNR?
Sources
- seats.aero The product itself: the Pro price of $9.99 a month or $99.99 a year, the 24 loyalty programs in its navigation, the free tier covering flights departing within the next two months, Pro unlocking up to a year of availability, and the Tools menu carrying its Alaska first class, Air Canada eUpgrade, Emirates, United PlusPoints and JetBlue Move to Mint upgrade finders. That menu renders client-side, so it is only visible in a browser. (accessed August 8, 2026)
- One Mile at a Time: guide to seats.aero What seats.aero is, how its cached search works, and its free alerts. (accessed July 24, 2026)
- Broadreach Travel: is seats.aero worth it? 2026 review covering Pro pricing, the 60-day free window, Pro's live re-check and alert filters, and cached-result staleness. (accessed July 24, 2026)
- AwardWallet: seats.aero guide Loyalty-program coverage count, corroborating the 24 programs counted in seats.aero's own navigation. (accessed July 24, 2026)
- The Points Guy: seats.aero Coverage and pricing corroboration. (accessed July 24, 2026)
- seats.aero: Partner API overview The Pro API surface and the programs it searches. (accessed July 24, 2026)
seats.aero is a trademark of its owner. 2LNR is not affiliated with or endorsed by seats.aero. Competitor pricing and features are as of August 2026 and may change; see the sources above.
See your routes in the upgrade and award matrix
Start free with the 14-day window and on-demand refresh. Go Pro when you need the full 331-day horizon and alerts.