Local abortion funds financially assist people who need abortions and struggle to pay for them. They also help with housing and transportation if needed. The National Network of Abortion Funds is, well, a national fund, and you can donate directly to them and sign up for their action alerts.
You can also research abortion funds in your area — then call them and see what resources they need. A room for someone to stay in? A ride for someone who needs one? There are a ton of ways to get involved and help someone in need.