Gas Prices Along Interstate 45
Updated April 5, 2026 — Prices updated regularly from EIA data
Route • 1 states
About Interstate 45
Running 285 miles from Dallas, TX to Galveston, TX, I-45 connects North Texas to the Gulf Coast. As an entirely Texas highway passing near Houston's massive refinery complex, I-45 enjoys some of the cheapest gas prices of any major US corridor.
Avg. Price Along Route
$2.69
Est. Trip Fuel Cost
$107
Price Range
$2.68–$2.69
Gas Prices at Each Stop
- MOST EXPENSIVEDallas, TX$2.69
- CHEAPESTHouston, TX$2.68
Fueling Tips for Interstate 45
- Fill up in Texas before entering expensive markets along the route.
- Avoid highway exit stations — drive 1-2 miles off the exit to find prices 10-25 cents cheaper.
- The GasBuddy app shows upcoming prices along your route so you can plan fill-up stops.
- Consider a forward fill-up strategy: check prices 50-100 miles ahead.
- Fleet cards and membership fuel programs give additional discounts at qualifying stations along Interstate 45.
Making the Most of Every Road Trip
Smart travelers combine fuel savings with great American collectibles. Limited offers available for road trip enthusiasts.
Claim Your Coin →Frequently Asked Questions
Related Gas Price Pages
Gas Prices Along Interstate 5Gas Prices Along Interstate 10Gas Prices Along Interstate 15Gas Prices Along Interstate 20Gas Prices Along Interstate 25Gas Prices Along Interstate 35Gas Prices Along Interstate 40Gas Prices Along Interstate 55Gas Prices Along Interstate 65Gas Prices Along Interstate 70Gas Prices Along Interstate 75Gas Prices Along Interstate 80Gas Prices Along Interstate 85Gas Prices Along Interstate 90Gas Prices Along Interstate 95Gas Prices Along Interstate 4Gas Prices Along Interstate 8Gas Prices Along Interstate 12Gas Prices Along Interstate 24Gas Prices Along Interstate 26Gas Prices Along Interstate 30Gas Prices Along Interstate 44Gas Prices Along Interstate 64Gas Prices Along Interstate 66Gas Prices Along Interstate 68Gas Prices Along Interstate 69Gas Prices Along Interstate 71Gas Prices Along Interstate 76Gas Prices Along Interstate 77Gas Prices Along Interstate 78Gas Prices Along Interstate 81Gas Prices Along Interstate 84Gas Prices Along Interstate 87Gas Prices Along Interstate 88Gas Prices Along Interstate 91Gas Prices Along Interstate 93Gas Prices Along Interstate 94Gas Prices Along Interstate 96Gas Prices Along Interstate 97Gas Prices Along Interstate 99Gas Prices Along Interstate 278Gas Prices Along Interstate 376Gas Prices Along Interstate 390Gas Prices Along Interstate 405Gas Prices Along Interstate 495Gas Prices Along Interstate 285Gas Prices Along Interstate 610Gas Prices Along Interstate 635Gas Prices Along Interstate 820Compare All 50 StatesRoad Trip Calculator